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Geometry/Questions Answered by Expert Azeem Hussain
| Subject | Date Asked |
| Dimensions of a Compound shape with only the area | 2/2/2012 |
| Q: I am having trouble with a problem which is seeking the width (x) of a Norman window (a square with ... A: Hey Chris, For a Norman window, the side of the square is equal to the diameter of the semicircle. ... | |
| Distance Between Point and Line | 1/26/2012 |
| Q: Hey I have an exam tomorrow and I'm stuck on this review question A cable company is connecting a ... A: The shortest distance is the perpendicular distance. This can be computed by taking the orthogonal ... | |
| Pythagorean Triples | 1/3/2012 |
| Q: The given lengths are of a right triangle. All three sides lengths of the triangle are integers and ... A: Hey SuperGeek, There are two options: (1) Both sides are legs (2) The longer side is the hypotenuse ... | |
| Congruency Proof | 12/14/2011 |
| Q: Given: line AB is congruent to line AC, Angle BAD is congruent to angle CAD. Prove: line AD bisects ... A: It is given that angle BAD is congruent to Angle CAD and therefore triangles BAD and CAD are ... | |
| Geomtry Using Similarity | 12/13/2011 |
| Q: The Design for a Mural is 16 in. Wide and 9 in High. What are the Dimensions of the largest possible ... A: Once you've converted all measurements to the same units, divide the width of the wall by the width ... | |
| Curve/Point | 12/3/2011 |
| Q: i am not a math major, even a student but am curious about the basics of geometry. what is a ... A: Strictly speaking, there are countable infinites and uncountable infinites. The natural numbers (1, ... | |
| Trigonometry | 12/1/2011 |
| Q: This question is about heights and distances.It is from class X.I actually tried to understand and ... A: Begin by drawing a diagram of the situation. The buildings are understood to be perpendicular to ... | |
| Curve/Point | 11/28/2011 |
| Q: i am not a math major, even a student but am curious about the basics of geometry. what is a ... A: In general, straight lines are easier to work with, both intuitively and computationally. In ... | |
| Curve/Point | 11/27/2011 |
| Q: i am not a math major, even a student but am curious about the basics of geometry. what is a ... A: A curve of is made up of infinitely many points. A point is a specific location whose dimension is ... | |
| Diameter and Circumference | 11/22/2011 |
| Q: What is the Percentage of a Corresponding value in a Half Circle's circumference and its Diameter. ... A: Draw a circle of radius R centred at the origin. Treat it essentially as you would the unit circle. ... | |
| Triangle Congruency | 11/4/2011 |
| Q: There is a isosceles triangle ABC that has a segment BD splitting it directly in half to form two ... A: As written, if BD splits the isosceles into two right triangles, angles ADB and CDB are by ... | |
| Determining Triangle Congruence | 10/19/2011 |
| Q: http://imgur.com/qKFNm The picture above shows two triangles with a shared segment as well as ... A: PT=PT by the reflexive axiom, which is necessary to mention. Stating that IT is parallel to OP by ... | |
| Complementary Angles | 10/15/2011 |
| Q: Angle A and Angle B are complementary. Find m angle A and m angle B m angle A= (3x+2)(theres a ... A: Complementary angles sum to 90 degrees. This means angle A plus angle B equal 90 degrees, which ... | |
| Tangent to Conic Section | 9/10/2011 |
| Q: plzzzzzz tell me how to find equation of tangent to any conic section from a point outside it. A: Hey jazzzzzzz, Choose an appropriate interval where you can define the conic section as a function. ... | |
| Proofs - Isosceles Triangle | 8/29/2011 |
| Q: I have a homework in geometry. It is about proving triangles. I am asked to prove that the triangle ... A: By the definition of perpendicular, angles BDA and CDA are both 90 degrees. BD=BC (given) and AD=AD ... | |
| Geometry Problem & Symbols? | 8/5/2011 |
| Q: I am having a little bit of trouble. First off, does this ∡ mean "measured angle"? I ask that, ... A: You answered the first question correctly. Note that having found the measure of angle 2, you could ... | |
| Geometry Problem & Symbols? | 8/5/2011 |
| Q: I am having a little bit of trouble. First off, does this ∡ mean "measured angle"? I ask that, ... A: The symbol about which you inquire means "angle." (Excluding the arc, the symbol still means ... | |
| Mirrored Numbers - (Exact Replica of the Number) - Optics & Real Life Use ? | 7/26/2011 |
| Q: What i observe by looking at the Numeric Whole Numbers(Integers) in Mirror (Glass) Object are the ... A: Mirrored Numbers are palindromic numbers containing the digits 0, 1, and 8. I don't believe this ... | |
| Loci Help! (illustrated) | 7/25/2011 |
| Q: I saw where this question was asked before, but could you provide drawing examples of what you mean. ... A: Hey Anna, In the diagram, BX is the angle bisector. The zero-point case is when the given distance ... | |
| Isoceles Trapezoid Diagonal | 7/17/2011 |
| Q: sir please explain me the proof of arriving at the length of diagonal in a isoceles trapezium which ... A: Let a be the short base, b be the long base and c be the length of the equal sides. Draw the ... | |
| Quadractic Relations | 7/13/2011 |
| Q: Hey i have a question. Determine the measure of the bas and the height of the triangle if its area ... A: The area of a triangle is determined by A=bh/2. You know A=30, b=(x+6) and h=(x-1). Plug them into ... | |
| Negative Angles | 7/2/2011 |
| Q: Find the measure of the complementary angle of (x+3)°? let y as the angle, c as complement y=(x+3)° ... A: It would be a stretch to allow x to take on negative values. By definition, complementary angles ... | |
| Standard Form of a Line | 6/21/2011 |
| Q: i'm having trouble with this problem. please help Write the equation of the line that contains the ... A: Hey Julia, Perpendicular lines have slopes that are negative reciprocals of one another. An ... | |
| sin(ab) | 6/21/2011 |
| Q: Is there a trig identity for sin(ab) where ab is the product of two angles? I've searched online ... A: Hey Adam, To my knowledge, there is no general identity that will give you a result with no ab ... | |
| Basic Trigonometry | 6/18/2011 |
| Q: i'm having alot of trouble with these two problems. There a bit alike and I don't know how to solve ... A: The key to solving both of these problems is reducing the situation to right triangles. Drawing a ... | |
| Loci Help! | 6/7/2011 |
| Q: Given an angle, ABC,there are 3 possibilities for the locus of points in a plane equidistant from ... A: Hey Helen, If we're indeed in the plane (2-D) and not in space (3-D), then your statements ... | |
| "Very Difficult Question in Geometry" | 6/4/2011 |
| Q: Plzzzzzzz give a very difficult question in geometry so that I can practice A: All right Jazzzzzzz, here goes. In two dimensions, consider a 5m by 5m shed adjacent to an ... | |
| 3D Object's Cost | 6/2/2011 |
| Q: Define a 3D object where the total cost of its volume is $3/cm^3, its surface area cost is ... A: Hey Jim, The first thing you need to do is select the shape of the 3D object. You then need to ... | |
| Trigonometric Identities | 5/23/2011 |
| Q: Good day - out of thirty (30) questions on a worksheet,I am unable to do the following. I have a few ... A: Hey Kyle! A strategy I find helpful with these problems is to break all the operators into sines ... | |
| Solving Logarithmic Equations | 5/15/2011 |
| Q: Solve 2log[2](8x)-log[2](1+x^2)=4 I couldn't use the quadratic formula to find my answer! ANSWER: ... A: Whoa Eddy, You're raising 64 to the power of x? Please explain your reasoning! Whenever you have ... | |
| Quadratic Trigonometric Equation | 5/15/2011 |
| Q: Solve for θ for 0°≤θ<360° for the equation 2Sin^2 θ + 2 Sin θ = 1 I need ... A: The sine of an angle represents the y-coordinate of a point on the unit circle. Provided θ is ... | |
| Proving a Trigonometric Identity | 5/15/2011 |
| Q: Does my answer prove the identity: Tan^2 x = (1-cos2x)/ (1+cos2x)? Tan^2 x = Sin^2 x / Cos^2 x. = ... A: You've almost got it. The half-angle formulas are sin^2 x = (1 - cos2x)/2 and cos^2 x = (1 + ... | |
| Solving Logarithmic Equations | 5/15/2011 |
| Q: Solve 2log[2](8x)-log[2](1+x^2)=4 I couldn't use the quadratic formula to find my answer! ANSWER: ... A: Eddy, To verify your answer, you can always plug it into the original equation. x=1.5 does not ... | |
| Solving Logarithmic Equations | 5/14/2011 |
| Q: Solve 2log[2](8x)-log[2](1+x^2)=4 I couldn't use the quadratic formula to find my answer! A: Hey Eddy, By properties of logarithms, constant multiples can be made exponents of the (argument). ... | |
| Quadratic Trigonometric Equation | 5/14/2011 |
| Q: Solve for θ for 0°≤θ<360° for the equation 2Sin^2 θ + 2 Sin θ = 1 I need ... A: Use the substitution sin(θ)=x, and you'll find your equation is quadratic. Find its roots. ... | |
| Quadratic Trigonometric Equation | 5/14/2011 |
| Q: Solve for all delta for 0 < or equal to delta < 360 for the equation 2sin^2 (delta) + sin (delta) = ... A: Substitute sin(delta) with x. The equation becomes 2x²+x=1, or 2x²+x-1=0. This is a quadratic ... | |
| Finding the Exact Value of Trig Functions | 5/14/2011 |
| Q: Find the exact value of the trig function Given: Sin A = 3/5 and Sin B = -5/13 and A and B are in ... A: As the sine of an angle represents a y-value on the trig circle, it can have a different value in a ... | |
| Factor Completely | 5/10/2011 |
| Q: i do not understand this at all......a rectangular prism has a volume of X^3y+xy^3-2x^2Y^2 with a ... A: Hey Kelly, The expression for volume can be factored into V=(xy)(x²-2xy+y²), and then into ... | |
| Polynomials | 5/2/2011 |
| Q: why the monomial shouldn't contain variable in it's denominator. Example 1/x is not monomial but x ... A: There are numerous properties that apply to functions where the exponents on x are all positive ... | |
| Congruency Cases - SSS, SAS, AAS | 4/22/2011 |
| Q: I learnt in my juniour sections that two triangles are said to be congruent if they satisfy the ... A: The theorems can all be proven essentially by contradiction. However, they require diagrams that I ... | |
| Internal Line Division | 4/12/2011 |
| Q: I'm having a difficulty in this question, i tried solving it but i failed answering it. Please help ... A: Hey John, If you draw the line, it looks something like this: P--O--------Q, with P being the ... | |
| Exponent Issue | 3/29/2011 |
| Q: c^3-28c^(3/2)+27=0 This problem confused me because I did not think you could have a variable be ... A: Almost anything mathematical can be featured in an exponent. Fractional exponents are fairly ... | |
| Reducing Fractions | 3/28/2011 |
| Q: ok my teacher says i need help in math with fractions but i don't even know how to reduce them to a ... A: When reducing fractions, you need to divide by the greatest common divisor in the numerator and ... | |
| Intersection of Angle and Perpendicular Bisectors of a Triangle | 3/18/2011 |
| Q: If constructed correctly, the angle bisectors and the perpendicular bisectors of a triangle should ... A: Hey Deni, The angle bisectors will cross at the incenter and the perpendicular bisectors will cross ... | |
| Circle and Pi | 3/18/2011 |
| Q: Why is any circle's circumference is always 3.14 times greater than its diameter? I mean when you ... A: All circles are similar. They can be expanded or contracted, but all their relative properties ... | |
| Lateral Area - Triangular Prism | 3/9/2011 |
| Q: I really need help finding the lateral area of a triangular prism but, there is a missing angle that ... A: The lateral area of a triangular prism (or any prism) is the base perimeter multiplied by the ... | |
| Similarity - Paint Can | 3/7/2011 |
| Q: Hey can you help me with this question im having a hard time doing it: A large can of paint has a ... A: Scale factors refers to the ratio of one-dimensional sides. This means for the smaller can, it ... | |
| Eigenvalues of a 3 x 3 Matrix | 3/5/2011 |
| Q: Can you prove that a 3x3 matrix must have at least one real eigenvalue? A: The characteristic equation of a 3x3 matrix is a polynomial of degree 3. The roots of this ... | |
| Apex or Vertex? | 3/3/2011 |
| Q: I am a second grade teacher and am currently teaching geometry. The curriculum requires that I ... A: When I was first taught solids, the same question came up. My teacher hesitated, but gave the ... | |
| Rotations | 3/2/2011 |
| Q: I dont understand rotations.Can you help discribe this to me? Also I dont understand this problem.. ... A: "About O" means point O is the centre of rotation. Consider the following. Place a pencil on your ... | |
| Surface Area | 2/28/2011 |
| Q: I'm having a really hard time trying to figure out surface area.... could you please teach me about ... A: Hey Jen, Surface area, or simply area, is the expression of two-dimensional geometry. It is the ... | |
| Isosceles-based Prism | 2/27/2011 |
| Q: I'm trying to do my homework and I'm just stuck on this one problem. That's the question : The bases ... A: Hey Patrycja, First off, all prisms have rectangular faces. Take the base, whatever shape if may ... | |
| Parabola - Bridge | 2/8/2011 |
| Q: how did you solve this problem? ... A: That question was asked 37 months ago today... And in retrospect, I don't know what I did to end up ... | |
| Diagonal of Cube | 2/3/2011 |
| Q: What is the length of a diagonal line through a cube of 1 inch.What I am searching for is the ... A: Knowing the properties of 45-45-90 and 30-60-90 triangles is very useful, but it is the trusty ... | |
| Finding the Equation of a Line | 1/24/2011 |
| Q: Find the equation of the line that satisfies the given condition. The line passing through the ... A: Hey Jolleen! Begin by finding the slope of the line. Parallel lines have identical slopes, so the ... | |
| Rhombus | 1/20/2011 |
| Q: The is this question which I do not fully understand: A figure is a rhombus. It's side length is 13. ... A: Rhombi have four equal sides, so their perimeter is simply the side length multiplied by four. The ... | |
| Area of a Triangle with Variable | 1/17/2011 |
| Q: I'm in sixth grade and I'm learning Pre-Algebra. I don't really understand how to find the area of a ... A: The area of a triangle is half the product of the base and the height. If you want a numerical ... | |
| Area of Circle | 1/7/2011 |
| Q: How do I determine the area (square feet) of a 26" diameter circle? A: The area of a circle is given πr², where r is the radius, and π is the constant ... | |
| Polygons - Internal Angles | 1/7/2011 |
| Q: I have stumbled upon a question that I do not understand. I would really apprieciate it if you could ... A: For an n-sided polygon, the sum of its interior angles is given by 180(n-2). From this equation, ... | |
| Coordinate Geometry - Linear Equations w/2 Variables | 1/6/2011 |
| Q: What is the equation of the line that contains the points with (x,y) coordinates (–3,7) and (5,–1) ? ... A: The line can be expressed by a number of equations, but the simplest one to find is the ... | |
| Basic Trig - Ladder Against Building | 1/5/2011 |
| Q: A 20 foot ladder leaning against a building making an angle of 60 degrees with the ground. How far ... A: Hey Sharonett! The building, the ground, and the ladder form a right triangle. You need to use ... | |
| Quadrilateral's Area from Side Lengths | 12/12/2010 |
| Q: how to find the area of an quadrilateral when only its 4 sides are given.the four sides are ... A: To my knowledge, you need insight on the shape of the quadrilateral. If you know a little bit more, ... | |
| Mathematical Modelling | 12/4/2010 |
| Q: I need to model a building with a curved roof structure. For example the equation of the roof ... A: In 3-D, we have the x-, y-, and z-axes, the latter of which is conventionally used for height. ... | |
| Contrapositive, Converse, and Inverse | 10/28/2010 |
| Q: im currently using an online course for geometry, and some of it is confusing me, its the ... A: Hey Jason, The inverse is the same statement, but with "not" in front of each part. "If a figure ... | |
| complement and supplement | 10/26/2010 |
| Q: so my objective is, find the measure (if possible) of the complement and the supplement of each ... A: If I had to guess, I'd say the 0.5 is relative, meaning the angle is half as large as its ... | |
| Surface Area - Pyramid | 10/26/2010 |
| Q: i just started a new school and i don't really grasp the concept trying to find the surface area the ... A: As with all right pyramids (whose vertical faces are congruent isosceles or equilateral triangles), ... | |
| Angles of Inclination | 10/13/2010 |
| Q: My question is in what real life situations do you use the angle of inclination? I kind of already ... A: I understand your situation. I'll give you a couple of examples, but frankly, it's not like I use ... | |
| Cylinder Radius | 10/11/2010 |
| Q: The rectangular metal sheet of area 2m sq. is rolled to form a cylinder of volume 4/(pie)m cube. ... A: To solve this question, you need to make a system of equations in 2 variables using the equations ... | |
| Law of Sines | 9/25/2010 |
| Q: My math homework, there is a triangle with a length called A and a length which is 12cm. Length A ... A: What you need here is the law of sines. It states that the ratio of a side to the sine of its ... | |
| Isosceles Trapezoid | 9/20/2010 |
| Q: In an isosceles trapezoid the length of each leg is 3, each diagonal has length 7 and the longer ... A: Hey Space Man, Use the law of cosines to find the angle between a leg and the long base. Drop ... | |
| Pizzas | 9/12/2010 |
| Q: Ok. So I need a lot if help with this question. I have been working on it a lot, but I can't seem to ... A: Hey Brianna, The area of a circle is found by A=πr², where r is the radius of the circle. ... | |
| Pizzas | 9/12/2010 |
| Q: Ok. So I need a lot if help with this question. I have been working on it a lot, but I can't seem to ... A: Hey Brianna, You need criteria to answer this question. How important is the number of toppings ... | |
| Area of Triangle | 9/10/2010 |
| Q: Question involves finding area of a triangle: 27= 1/2bh but the height is three times the base. ... A: The height is three times the base? No problem. h=3b. No need to guess anything now, just put this ... | |
| Square Root Counterexample | 9/9/2010 |
| Q: Okay, in this problem you are supposed to find a counterexample that proves the conjecture wrong. I ... A: Hey Olivia, Take x to be any number between 0 and 1. Root x will be greater than x. If x=0 or if ... | |
| Supplementary or Complementary | 8/30/2010 |
| Q: I know they would be supplementary if the it all was flat but I dont know how to do it since they ... A: Hamad, They are in the same plane. Picture a side view of a staircase. Or an inclined plane, with ... | |
| Spherical Coordinate | 8/25/2010 |
| Q: Could you tell me how to calculate the distance of a point from origin of an ellipsoid in spherical ... A: I would say to convert the coordinates to rectangular, and then use the extended Pythagorean ... | |
| Hyperbolas & Ellipses | 8/22/2010 |
| Q: Why we are considering 2 foci for ellipses and hyperbolas? Which is a and b for a hyperbola whose ... A: Let's begin by defining what a circle is: the locus of points equidistant from a single point known ... | |
| Sum of Integers from 1 to 100 | 8/21/2010 |
| Q: Find the fastest was to sum the integers from 1 to 100; from 1 to n. (hint: use patterns) A: Hey Erica! Classic question. Count pairs of numbers whose sum is 100, and then the the midpoint. ... | |
| Various | 8/15/2010 |
| Q: I hope you can help me solve these problems: I am supposed to describe in words the locus that ... A: (a) It's worded a bit weird, but I believe the locus in question is the bisector of that angle. (b) ... | |
| Diagonal of Prism | 8/14/2010 |
| Q: Can you help solve part b) of the attached problem (length of diagonal AB)? A: Hey Jeff, All this problem requires is two applications of the Pythagorean Theorem. I want you to ... | |
| Plotting an Isoceles Triangle | 8/13/2010 |
| Q: I am a college student, but I have a problem with math. I really need some help solving this problem ... A: Hey Hope, Start by sketching the given points. This gives you a very rough idea of what to expect. ... | |
| Proofs for Isosceles and Speed | 8/12/2010 |
| Q: I hope you can help me answer thisI need to prove : If an isosceles triangle has an altitude from ... A: I'll say this informally. Consider the two triangles created by the altitude. An altitude is, by ... | |
| Geometry:Circles | 8/10/2010 |
| Q: I am homeschooled,and I have been stuck on these circles for awhile.I just don't understand the ... A: Hey Samantha, Question 2 is a direct application of the far arc-near arc formula (FANAF). Question ... | |
| Geometry:Circles | 8/10/2010 |
| Q: I am homeschooled,and I have been stuck on these circles for awhile.I just don't understand the ... A: These questions all require you to know circle theorems involving arcs, such as the ones found at ... | |
| Symmetric, Reflexive, and Commutative Properties | 7/12/2010 |
| Q: what is the definitions for these following properties.... symmetric, reflexive, commutative. thank ... A: Hey Autumn, These are all similar, so be sure you understand how to distinguish them. The ... | |
| Lottery Odds | 7/5/2010 |
| Q: Would anyone's chances of winning the lottery be higher or lower if they played the same numbers ... A: It all depends on the process by which the lottery runner selects the winning numbers. If they are ... | |
| Two-Column Proofs | 6/23/2010 |
| Q: My question is: Prove that tangents to a circle at the endpoints of a diameter are parallel. State ... A: Hey Aimee! Proofs like this require a labelled diagram. I'll do my best to describe one. There is ... | |
| Trigonometry Without a Calculator | 6/21/2010 |
| Q: How can I find the values of trigonometric ratios of all angles like sin 23degrees or tan 59.45 or ... A: Without a calculator, you would need a trigonometric table. This is a table with angles down one ... | |
| Multiplying & Dividing Negatives | 6/13/2010 |
| Q: "Sir , I am a high school student . But right from my childhood I was having a question in my mind ... A: Strictly speaking, one word: pragmatism. Because it works. The actual mathematical explanation is ... | |
| Area Formulae for Hexagons | 6/8/2010 |
| Q: what is the formula to find the surface area of an irregular hexagon? also what is the formula for ... A: Hey Rosie, There is no formula for any irregular polygon's area. You'd need to subdivide it into ... | |
| Isosceles Proof | 5/30/2010 |
| Q: Azeem, I am trying to do an Isosceles Proof but having no luck. Here's the problem: Complete the ... A: "Show that ABD and ACD are congruent" probably refers to the triangles. The perpendicular line ... | |
| Triangles - Isosceles & Scalene | 5/26/2010 |
| Q: I'm a 12-year-old advanced-Cambridge 6th grade student and I'm taking Algebra next year. I'm doing ... A: Isosceles triangles have exactly two equal sides. As a result, they have two equal angles ... | |
| Volume - Test Tube | 5/20/2010 |
| Q: I need the math for this one - if you have a test tube shape(a cylinder with semi-circular bottom ... A: Hey Tony! You have a cylinder with a hemisphere attached to it. Consider both solids separately. ... | |
| Trigonometry - Definitions | 5/17/2010 |
| Q: how's pie's formula 22\7 and how do we get it can u please explain (how is it related to a circle) ... A: sin, cos, and all the rest are trigonometric operators. They exist because of we have defined them ... | |
| Pi | 5/16/2010 |
| Q: how's pie's formula 22\7 and how do we get it can u please explain (how is it related to a circle) A: Pi (spelled without an e) is the ratio of a circle's circumference to its diameter. If you take the ... | |
| Conventions for Drawing Shapes | 5/14/2010 |
| Q: Does it matter which way a 2 dimensional shape is drawn? While helping my child do her homework my ... A: It does not matter. In 2 or 3 dimensions, shapes can be drawn with any perspective, provided the ... | |
| Far Arc Near Arc Formula | 5/7/2010 |
| Q: What is the rest of this conjecture? The measure of an angle formed by two intersecting secants ... A: Hey Megan! The measure of an angle formed by two intersecting secants through a circle is equal to ... | |
| Proofs - Diameter Tangents | 5/3/2010 |
| Q: can you prove that tangents to a circle at the endpoints of a diameter are parallel? State what is ... A: I won't prove it formally for you, but the basic idea is as follows. Tangents, by definition, form ... | |
| Circles and Pentagons | 5/3/2010 |
| Q: So I tried to figure this out for a long time, and I feel tha I am on the right track, however I am ... A: Hey Kevin! To my understanding, finding the diagonal is not necessary. Begin by finding the ... | |
| Area - Yield Sign | 4/22/2010 |
| Q: A yield sign is equilateral with each side measuring 62cm. i measured down the middle for the height ... A: Hey Jacqueline! The general way of doing this is as follows. Subdivide your equilateral triangle ... | |
| Lateral Area of Triangular Prism | 4/20/2010 |
| Q: My question is how to find the lateral area of a triangular prism. I've tried to figure out formulas ... A: Hey Allie! As with all prisms, the lateral area (bases excluded) is equal to the base perimeter ... | |
| Dodecagon | 4/18/2010 |
| Q: How do you calculate the length of the 12 equal sides of a dodecagon based on the radius, ... A: The idea here is fairly simple. From the centre of the [regular] dodecagon, draw a line to two ... | |
| Trigonometry - Aircraft | 4/10/2010 |
| Q: If I stand at the seaside and look out to sea I understand that the horizon is about 3 miles away. ... A: I'm not sure how much of an effect the curvature of the Earth has. If you were to neglect that ... | |
| Sides of a Dodecagon | 3/25/2010 |
| Q: How can I calculate the length of each side of a regular do decagon with a radius of 19? A: Find the centre of the dodecagon. Draw a line to every vertex. You have now separated the triangle ... | |
| Similarity - Cylinder | 3/23/2010 |
| Q: If the dimensions of a cylinder are tripled, how will it affect the surface area? A: Hey Travis, Dimensions are in 1-D, surface area is in 2-D. When you affect something in 1-D, the ... | |
| Basic Trig - Ladder Against Wall | 3/13/2010 |
| Q: I have a favor to ask. I have a geometry question that I cannot figure out and would like some ... A: The ladder forms a right triangle with the wall. Height 7, base x, hypotenuse h. You can set up ... | |
| Perpendicular Bisector - Definition | 3/13/2010 |
| Q: A very simple definition......... a perpendicular bisector is a line that bisects a specific line ... A: A perpendicular bisector splits a line segment in two equal parts and is at a right angle to that ... | |
| Scale | 3/11/2010 |
| Q: My daughter is in the 6th grade and she has to find the scale; scale drawings and models; how do we ... A: To find the scale of 1 in: 12 ft, only one type of unit must be used. There are 12 inches in a ... | |
| Solids - Painting Cubes | 3/10/2010 |
| Q: 125 small congruent cubes are combined to build a large cube. all the faces of the large cube are ... A: Hey Allyson! Begin by constructing your large cube. It will measure 5 by 5 by 5 small cubes. It ... | |
| Quadrilateral Inscribed in a Circle. | 3/4/2010 |
| Q: In this picture, a quadrilateral is inscribed on a circle, angle ABC is 30 degrees, and the radius ... A: The radius is given, allowing you to find diameter AC. ABC is a 30-60-90 triangle, so you can use ... | |
| Volume - Drum | 3/3/2010 |
| Q: I'm trying to calculate how many parts will fit in an drum. It's not really homework related but ... A: The drum is a cylinder and the volume of a cylinder can be calculated by πr²h, where r is the ... | |
| Circle - Circumference | 3/3/2010 |
| Q: i have been to atleast 29 other sites that havnt explained it simply HOW DO I GET to find - the ... A: The formula for the circumference of a circle is 2 x pi x radius. Pi has an approximate value of ... | |
| Probability - Marbles | 2/23/2010 |
| Q: A table shows that 8 red 19 blue 29 yellow and 23 green marbles were picked random;y fom a bag and ... A: From a purely probabilistic view, you would have to find the amount of marbles there were initially ... | |
| Area - Regular Triangular Prism | 2/22/2010 |
| Q: I need to find the lateral area and surface area of a regular triangular prism with width 9 cm and ... A: The lateral area would be equal to the base perimeter multiplied by the height of the prism. That ... | |
| Similarity - Globe | 2/18/2010 |
| Q: I dont know where to begin to answer this question. Is there a formu;a to start to fgure this ... A: Hey Allyson! There is a formula. The scale factor (k) is defined as the ratio of one side to ... | |
| Regular Figures | 2/10/2010 |
| Q: I know virtually nothing about geometry and am trying to understand what Rudolf Arnheim is saying ... A: Equal side measures means all the sides have the same length. A square is a regular figure, other ... | |
| Regular Figures | 2/9/2010 |
| Q: I know virtually nothing about geometry and am trying to understand what Rudolf Arnheim is saying ... A: Regular figures have equal side and angle measures. A regular triangle is an equilateral. A ... | |
| Areas of Regular Triangles | 2/9/2010 |
| Q: Well my Geometry class is doing a section called Areas of Regular Triangles and I am completely ... A: Multiplying square roots is really quite simple. When multiplying roots, multiply the stuff outside ... | |
| Area of Triangle Using Semiperimetre | 2/8/2010 |
| Q: The question the teacher gave me is to find the area of the triangle where radius of the circle ... A: The subject line doens't match the question, and that has me confused. I'm nearly certain this ... | |
| Vectors - Dot and Cross Products | 1/28/2010 |
| Q: in vectors. we say the cross product is vector quantity and dot product is scalar. but why cross ... A: The dot product (aka scalar product) results in a scalar quantity. 2 vectors are combined and the ... | |
| Volume - Water Tank | 1/26/2010 |
| Q: Our water holding tank is 9 feet tall and 10 feet in diameter,the high (full) waterline is 7 feet 2 ... A: Your water tank has a radius of 5 feet, or 60 inches. πr² tells you the area of a disc inside ... | |
| Trapezoid | 1/25/2010 |
| Q: I need to know all the side lengths and angle measures for the trapezoid JKLM, where KL are parallel ... A: The trapezoid you have proposed is completely acceptable. From the information given, there is not ... | |
| Trigonometry - 0, 90 Degrees | 1/21/2010 |
| Q: sir i know to derive the trigonometric values of 30,60,45degrees but how to find the values of 0,90 ... A: Draw a unit circle. 0 degrees is on the x-axis, so the sine is 0 and the cosine is 1. Similarly ... | |
| Counterexmaples - Months | 1/20/2010 |
| Q: I am reading and re-reading these question, but i don't seem to get it. Geometry is NOT my best ... A: You're trying to show an example where the same given information results in a different conclusion. ... | |
| Cone - Polyhedron? | 1/19/2010 |
| Q: is a cone a polyhedron with a circular base? A: Hey Heather, A cone is not a polyhedron. It is a circular cross-section of a pyramid, but still ... | |
| Interior Angles of a Hexagon | 1/16/2010 |
| Q: how do i find the value of x in a six sided figure. it kind of looks like a hexagon. it has 98 ... A: To my understanding, you're trying to find the value of x, where x is an angle measure. (I'm going ... | |
| Diagonals of Quadrilaterals | 1/14/2010 |
| Q: 1- How diagonals of quadrilaterals make triangles? 2- describe how to join triangles to make ... A: A diagonal joins two non-adjacent vertices (2 corners that aren't connected by a line). ... | |
| Factoring | 1/6/2010 |
| Q: I'm in 9th grade geometry and i really need help. my teacher told us we need to know how to factor ... A: Hey Sierra! The basic principle of factoring is to turn a sum into a product of sums. It is a form ... | |
| Science Fair Project | 1/5/2010 |
| Q: I am doing a science fair project. My expiriment is about rolling balls down a ramp that is ... A: When the ball goes down the ramp at 20 degrees, due to the direction of its momentum, it will try to ... | |
| Area - Equil. Triangle | 1/2/2010 |
| Q: How do I find the area of an equil.triangle with a radius of 2 times square root of 3? ANSWER: Hi ... A: I'll take the radius to be what you said it is, that is the distance from the centre of the triangle ... | |
| Counterexamples - Inequality | 12/31/2009 |
| Q: The question is Which of the following is a counterexample to the statement"If x > 3, then x > 6"? A ... A: The statement "If x > 3, then x > 6" means that if x is greater than 3, then it is also greater than ... | |
| Lateral Area of Triangular Pyramid | 12/30/2009 |
| Q: I'm having a hrad time in geometry right now because im homeschoolong and my parents don't know a ... A: Hey Daryl! The lateral area of a triangular pyramid is the area of one of the triangles multiplied ... | |
| Calculating Volume | 12/25/2009 |
| Q: is there an easy and quick way to calculate cubic meters A: It depends on the shape of the solid. A general technique you could use for small objects would be ... | |
| Reflection Symantics | 12/18/2009 |
| Q: i am having trouble understanding how to reflect points on tests, the points given are ... A: The transformation you have written out is not a reflection, but rather a translation. The points ... | |
| Sides of a Rectangle from its Diagonal | 12/5/2009 |
| Q: How can we find the sides of a rectangle whose diagonal is say 7", the ratio of the sides being ... A: You could draw a circle where the diameter was the known length (7"). If you join both ends of the ... | |
| Sides of a Rectangle from its Diagonal | 11/29/2009 |
| Q: How can we find the sides of a rectangle whose diagonal is say 7", the ratio of the sides being ... A: This question requires a system of equations. Let x equal one side of the rectangle, and the other ... | |
| Trigonometry | 11/19/2009 |
| Q: A 20 foot ladder is leaning against a building. If the base of the ladder is 6 feet from the base of ... A: Symon, When looking for an angle, you need to use inverse trig operations. In this case, the angle ... | |
| Calculus I - Various | 11/3/2009 |
| Q: Hey there I have a test tomorrow nigh for Calc and I just can't seem to get the answers for these ... A: 2. To find the 30th derivative, begin by finding the first few. f(x)=cos(2x) f'(x)=-2sin(2x) ... | |
| Finding Dimensions Given Area | 11/1/2009 |
| Q: I am trying to figure out how to get the base and lenght to a problem that only has the area given. ... A: Ultimately, your final formula will depend on the shape. You need an equation for area in terms of ... | |
| Circle Formulae | 10/12/2009 |
| Q: Hey, I'm in first year calculus in university and it seems my prof expects us to know the xy formula ... A: The equation for the unit circle centred at the origin is x²+y²=1. The standard equation is ... | |
| Angle of Elevation of Sun | 10/8/2009 |
| Q: Hey, I'm a high school junior and I'm trying to figure out how to find the elevation of the sun by ... A: Hey Bella, When dealing with a right triangle, basic trigonometry comes into play. Draw a right ... | |
| Angle of Elevation of Sun | 10/7/2009 |
| Q: Hey, I'm a high school junior and I'm trying to figure out how to find the elevation of the sun by ... A: The method I will explain to you uses an inverse tangent. Find some flat ground, and hold the metre ... | |
| Basic Trig - Airplane | 9/22/2009 |
| Q: An airplane takes off with an angle of elevation of 25º. It flies 1,100 feet before the angle levels ... A: Sketch the ground. Sketch the diagonal at 25 degrees to the ground. Connect the diagonal to the ... | |
| Complementary Angles | 9/18/2009 |
| Q: My daughter posed this question to me, and I can't seem to solve it: Angle A and Angle B are ... A: As written, there is no solution to the quadratic equation. Assuming there is a typo and it's ... | |
| Triangular Prism | 9/17/2009 |
| Q: how to find the surface area, volume and lateral area of the triangular prism if the height of the ... A: Assuming you have the three sides of the triangle and the prisms height... [a=side 1 of triangle ... | |
| Various | 9/14/2009 |
| Q: Azeem, honestly i have no clue about maths, I really need you help. 1. Please help me to find the ... A: Unless if you don't know what a square is (in which case tell me), I can't make it much simpler than ... | |
| Various | 9/11/2009 |
| Q: Azeem, honestly i have no clue about maths, I really need you help. 1. Please help me to find the ... A: A cube's surface area is composed of 6 equal squares. Find the area of one square and multiply that ... | |
| Systems of Equations - Complementary Angles | 9/2/2009 |
| Q: I really am tryin to figure out a math problem concerning two complementary angles. I have tried ... A: Complementary angles sum to 90 degrees. L+M=90, N+P=90. You have two variables in two equations. ... | |
| Square Roots | 8/31/2009 |
| Q: Task: Show the conjecture is false by finding a counterexample. Problem: The square root of a number ... A: Hey Cody! The square root of x will be greater than x when x is between 0 and 1 inclusively. ... | |
| Supplementary & Complementary Angles | 8/30/2009 |
| Q: the suppliment of an angle is 36 degrees less than twice the suppliment of the compliment of the ... A: The supplement (note spelling) of the complement (note spelling) is not 180-90-x, but 180-(90-x). ... | |
| Conversion - Cubic Meter to Ton | 8/30/2009 |
| Q: How to convert cubic meter into ton A: A cubic meter is a unit of volume, while a ton is a unit of mass. You may not convert from one to ... | |
| Volumes and Areas | 8/20/2009 |
| Q: I need to find the lateral are (when possible), surface area, and volume. 3.14 needs to be used for ... A: For a rectangular prism, volume can be calculated by multiplying all three dimensions. Lateral area ... | |
| hi | 8/19/2009 |
| Q: http://en.allexperts.com/q/Geometry-2060/2008/8/Coordinate-Geometry-Linear-Equations.htm I think u ... A: The order of the coordinates is irrelevant, as long as it is consistent. Whether (-3,7) or (5,-1) ... | |
| Roots of an Equation | 8/15/2009 |
| Q: I recently came acros the following type of equation: (x - 2)/(x - 1) = (x^2 + 6x + 4)/(x - 1) ... A: Allow me to begin by stating that the ideal strategy is to cancel the common factor. This gives you ... | |
| Analytic Geometry - 2-Point Distance | 8/15/2009 |
| Q: J (2,-5) K (-1,2) L (-5,-5) The distance formula consists of x1-y1 and x2-y2 so where does L come ... A: The formula for calculating the distance between two points on a plane is essentially the ... | |
| Irrational/Rational Circumference | 8/13/2009 |
| Q: You said that if we take a line whose length is rational and bend it to form a circle, the ... A: "You said that if we take a line whose length is rational and bend it to form a circle, the ... | |
| Circumference - Exactitude of Pi | 8/13/2009 |
| Q: Hey there, I was wondering that since pie is a number whose exact value is not known or it doesn't ... A: Hey Shikhin! You may have misunderstood the key part: FOLDING A STRAIGHT LINE INTO A CIRCLE DOES ... | |
| Circumference - Exactitude of Pi | 8/13/2009 |
| Q: Hey there, I was wondering that since pie is a number whose exact value is not known or it doesn't ... A: "What if we cut the circle at a point on its circumference and then unfold the entire circumference ... | |
| Circumference - Exactitude of Pi | 8/12/2009 |
| Q: Hey there, I was wondering that since pie is a number whose exact value is not known or it doesn't ... A: In theory, the length of any line segment or curve is measurable up to 100% accuracy. But, a ... | |
| Properties of Triangles | 8/3/2009 |
| Q: "Hello Sir, I have three questions: Q1:if C=2B,then c^2=ab+b^2. Q2:one side of a triangle is double ... A: For Q1, you haven't actually asked the question. You've given me the setup, but you haven't asked ... | |
| Proofs - Isosceles Triangle | 8/3/2009 |
| Q: I really need your help. I have struggled with this for months. I have a prrof that i cant seem to ... A: It seems as though your reason for statement 3 is mismatched. I think you should first state that ... | |
| Base Angle Bisectors of Isoceles Triangle | 7/31/2009 |
| Q: This is a problem which has bothered me all my life, well, at least since I first learned geometery, ... A: The question you are asking is a theorem known as the Steiner-Lehmus theorem. It is very difficult ... | |
| Number of Possible Triangles | 7/25/2009 |
| Q: On a triangle ABC ,D,E and F are points on side AB,G and H are on BC,I is a point on side CA. If all ... A: If the question is really what you've written, then the answer is zero, as joining 2 points will ... | |
| Circle Intersecting Parabola | 7/19/2009 |
| Q: Q)In the X-Y plane, the equations of circle shown is x^2 + y^2 = 4 ( center is at 0,0). At how many ... A: Hey Vandhana, You said drawing the graph didn't help you. It helped me. The graph is, in my ... | |
| Various | 7/18/2009 |
| Q: Find the area of a regular hexagon with side 2√3 cm apothem 3cm? (My problem is that i dont ... A: To prevent square roots from giving you "really long answers," it's best to just keep them as square ... | |
| Similarity - Quadrliateral | 7/17/2009 |
| Q: The sides of a quadrilateral are 3, 4, 5, and 6. Find the length of the sides of a similar ... A: Hey Carly! In problems such as this, the first step is usually to find the scale factor, that is ... | |
| Optimization - Area | 7/14/2009 |
| Q: It has been a LONG time since I have done this type of math. Can you refresh me on this simple ... A: There are numerous ways of doing this, including using systems of equations or Calculus. However, ... | |
| Radical | 7/13/2009 |
| Q: What is a radical? In geometry, I know it has something to do with square roots, but I don't ... A: Hey Melissa, Radicals are what you think they are, square roots. Actually, they're any root. This ... | |
| Area - Cylinder | 7/13/2009 |
| Q: I am looking at a tank 10 foot diameter 34 feet long. What is the formula for this and answer. Thank ... A: In order to find the surface area of a cylinder, break it up into three parts: the two circular ... | |
| Analytic Geometry - Perpendicular Line | 7/1/2009 |
| Q: What is the equation for a line that passes thru (2,5) and is perpendicular to line y=0.5x-3? The ... A: Hey Marie! Begin by finding the slope of the line. Perpendicular lines have slopes that are ... | |
| Perpendicular Lines | 6/30/2009 |
| Q: if the perpendicular lines doesn't form a right angle, can it still be considered perpendicular? ... A: Perpendicular lines are at right angles, 90 degrees, ALWAYS. This is their definition. Two ... | |
| Perpendicular Bisector | 6/29/2009 |
| Q: It has been a LONG time since I did Geometry. Can you help me understand this? Do I draw this or ... A: There is a mathematical way of figuring this out. Begin by finding the slope of AB. This is done ... | |
| Wrap Around a Bucket | 6/28/2009 |
| Q: I'm wrapping a vinyl adhesive around a bucket, and can't get the fit exact. I tried drawing the top ... A: You'll need to cut a sort of arch thing you have in the picture. It will have to be 31.42" on the ... | |
| Basic Trig Involving Systems | 6/22/2009 |
| Q: From a point A, the angle of elevation of the top of a transmission tower is 57*. At the point B, ... A: Begin by sketching the situation. Assume the tower is perpendicular to the ground. You will have a ... | |
| Unit Explanations | 6/16/2009 |
| Q: Why is perimeter measured in units and area is measured in square units? Please give examples to ... A: Dwayne, Reread the last part of my answer. It's essentially the same as with area, but in three ... | |
| Unit Explanations | 6/16/2009 |
| Q: Why is perimeter measured in units and area is measured in square units? Please give examples to ... A: When you're measuring perimeter you are only dealing with one dimension. If I asked you to find the ... | |
| Construction of Equilateral Triangle Around Given Center | 6/16/2009 |
| Q: Given only the length of the sides of an equilateral triangle and a point, how do I construct the ... A: Hey Dauda! Begin by constructing an equilateral (elsewhere on the page) using the given side ... | |
| Basic Trig - 2 Wires | 6/15/2009 |
| Q: A pole is used to support an observation platform. The top of the pole is secured by two wires, one ... A: Assuming the pole is perpendicular to the ground, the pole and its two supporting wires comprise two ... | |
| Circumference - Challenge Questions | 6/11/2009 |
| Q: I really need help with numbers 4-6 on the following page : ... A: For question 4, you know the total perimeter is equal to twice the side of the square plus twice the ... | |
| Surface Area - Painting a Spherical Tank | 6/7/2009 |
| Q: I'm having a very hard time finding out how much paint I need to cover a spherical tank with a ... A: Begin by finding the surface area of the sphere. To do this, you need the radius which is half the ... | |
| Loci | 6/4/2009 |
| Q: 1. sketch and describe the locus of all points in a plane that are 4 centimeters from a circle with ... A: 1. The locus would be a circle with radius of 12 (8+4=12). 2. This locus is really just a single ... | |
| Skydiving | 5/31/2009 |
| Q: "My name is Kira Yuta I am in grade eleven in USA I am studying for my final exam and I came a upon ... A: "98% of its terminal velocity" means v=(0.98)45=44.1. Plug this into the equation and solve for t. ... | |
| Skydiving | 5/30/2009 |
| Q: "My name is Kira Yuta I am in grade eleven in USA I am studying for my final exam and I came a upon ... A: What you need to understand in order to solve the question is written immediately before the ... | |
| Surface Area of Triangular Pyramid | 5/20/2009 |
| Q: I have a Triangular Pyramid - all edges are 3cm. How do I figure the Surface area and volume? A: Every triangle is an equilateral, meaning they have angles measuring 60 degrees each. Subdivide an ... | |
| Working Backwards on a Number Problem | 5/18/2009 |
| Q: I'm stuck on a geometry question and I dont understand it. Here's theA number is added to 4. The ... A: The easiest way to do this is to start at the last step and do the opposite of what is said. (The ... | |
| Area - Sphere | 5/18/2009 |
| Q: I recently took a geometry test, and i am required to correct all wrong answers. The only question ... A: The radius of a sphere can be found from its diameter, exactly as you would do for a circle: divide ... | |
| Comparing Prism Areas | 5/16/2009 |
| Q: the base of the right triangular prism is an equilateral triangle with a perimeter of 30 in. the ... A: Hey Matt, Lateral area is the product of the base perimeter and the height. Total surface area is ... | |
| Sphere - Surface Area | 5/8/2009 |
| Q: i have a globe that has a volume of 33.5103 inches cubed i need to find the surface area of the ... A: The volume of a sphere (a globe is a sphere) can be found by the equation V=(4(pi)r^3)/3. Plug in V ... | |
| Triangles and the Quadratic Formula | 5/7/2009 |
| Q: I read your answer to another student about how to solve a question similar to this one: "The ... A: Start by expanding your squares. 15²=x²+(x+2)² (15)(15)=x²+(x+2)(x+2) 225=x²+x²+2x+2x+4 Collect ... | |
| Basic Trig - Tree | 5/5/2009 |
| Q: can you please help me drawing and solving this problem. i tried but i don't think it is the right ... A: This problem requires you to use basic trigonometry twice. Begin by drawing your tree tilted at 12 ... | |
| Lateral Area - Regular Prism | 4/14/2009 |
| Q: I don't understand how to find the lateral area for regular prism. Can you explain in steps how do i ... A: A regular prism has 6 faces, all of which are rectangles. I'll ask you to draw a rectangular ... | |
| Similarity with Volumes | 4/13/2009 |
| Q: ..STILL trying to help my daughter out but I can`t remember radius etc..... ( x 3.14, etc) I really ... A: a) Cylinders and cones work the same ways as pyramids and prisms. The volume of a cylinder is the ... | |
| Volumes and Base Areas | 4/13/2009 |
| Q: ...I am the mom of a 9th grader and I am having a difficult time helping her with her homework. I am ... A: The volume of a pyramid is one-third of the product of the area and the height. V=Ah/3 (4.7)=A(1.5) ... | |
| Twisted Tape Measure | 3/31/2009 |
| Q: March 31, 2009 Azeem, If you pull a long steel measuring tape out to, say, 10 meters, and make a ... A: There are undoubtedly the variables of tape width and how tightly it can be twisted. From my own ... | |
| Polygons - Names | 3/25/2009 |
| Q: what are the names of the polygons eleven through twenty? A: 11-Hendecagon 12-dodecagon 13-triskaidecagon 14-tetrakaidecagon 15-pentakaidecagon 16-hexakaidecagon ... | |
| Optimization - Area | 3/25/2009 |
| Q: . OK OK this is the original problem: a 30 cm wire is cut to two. One piece is to bend to a square. ... A: Let the perimeter of the rectangle equal x and that of the square equal y. x+y=30, so y=30-x. ... | |
| Algebraic Volume and Surface Area | 3/24/2009 |
| Q: . I need help to figure out the followings: I want to find the ratio of the volume to the surface ... A: Begin by calculating the volume (multiply all 3 dimensions). Then calculate your surface area ... | |
| Analytic Geometry - Line Division | 3/17/2009 |
| Q: If W2 is the starting point, then W7 is located two-thirds of the way between W2(0,3) and ... A: Sketch the situation. Divide the line segment approximately. You have 2 segments. Indicate their ... | |
| Trig Identities | 3/15/2009 |
| Q: I am to verify 1-(sinx- cosx)^2/ sin x= 2cos x I got as far as cos^2x+ cos^2x/ sinx; which may or ... A: You need to verify this identity: [1-(sin x-cos x)^2]/sin x=2cos x. Note the brackets. Be sure to ... | |
| Trigonometry - Radians | 3/15/2009 |
| Q: the question is: Find all the angles (A) (between 0 and 2pi) that sastisfy the equation sineA = -1 ... A: The easiest way to visualize this is to draw a circle centred at the origin with a radius of 1. sin ... | |
| Most Common Digit from 1 to 1000 | 3/12/2009 |
| Q: Numbers are 1 to 1000. What is the most common number used in the series and what is the least used? ... A: I would say the least used digit is 0. This is because there is only one double zero per hundred. ... | |
| Basic Trig - Angle of Elevation Word Problem | 3/10/2009 |
| Q: You are skiing down a mountain with a vertical height of 1500 feet. The distance from the top of the ... A: Think of the mountain as a right triangle seen from the side. The height is equal to 1500 and the ... | |
| Trig - Carpenterial Angles | 3/9/2009 |
| Q: March 3, 2009 How is the math done in the general example of the following specific situation? You ... A: This formula is correct, but can be simplified as: angle_of_error=ASIN(RADIANS(distance_high/c)) ... | |
| Calculus I - Minimizing Cost | 3/9/2009 |
| Q: the area of the yard is 100 sq m. To put a fence around the yard the cheapest way at a cost of ... A: Let x equal length and y equal width. xy=100. (Your assumption about the perimeter is not ... | |
| Surface Area and Volume Formulae | 3/8/2009 |
| Q: what is the formula for surface area and volume for square pyramid, cyclinder, hemisphere, and ... A: Square pyramid: (b=base length, h=height, a=apothem) SA=b^2+2ab V=hb^2/3 Cylinder: ... | |
| Trig - Carpenterial Angles | 3/7/2009 |
| Q: March 3, 2009 How is the math done in the general example of the following specific situation? You ... A: If your question is an actual follow-up to your original question, ask it as a follow-up. If it is ... | |
| Trig - Carpenterial Angles | 3/3/2009 |
| Q: March 3, 2009 How is the math done in the general example of the following specific situation? You ... A: You can breathe a sigh of relief; trigonometry can allow you to solve for everything you've ... | |
| Ovoids | 3/2/2009 |
| Q: I am trying to be sure that I am using the proper terminology. An egg shape (like a chicken egg) ... A: Ovals are loosely defined in mathematics. I'd like to first say that the term ovoid is derived from ... | |
| Non-collinear Points | 3/1/2009 |
| Q: I am having trouble with thisPlot 7 non-collinear points on a page. How many different triangles can ... A: Hey Mia! Ignore the "at a time" part. To make a triangle you need to join three points, and that's ... | |
| Compound Interest Rate | 2/27/2009 |
| Q: Joe wants to put his savings in a bank account. He has heard the bank will pay him interest of 6.5% ... A: If you were told that Joe's %3 000 investment gained 6.5% in one year, how would you calculate that? ... | |
| Pythagorean Theorem - Shadow | 2/27/2009 |
| Q: A nine foot tree casts a forty foot shadow at 3:00 p.m. A boy was curious to determine the length ... A: Ivy, Sketch the situation. The tree is 9 feet tall, and [presumably] perpendicular to the ground. ... | |
| Proofs - Isosceles Trapezoid | 2/25/2009 |
| Q: Prove that the lengths of the diagonals of an isosceles trapezoid are equal with out using any ... A: I'll do this informally. Draw a diagram of an isosceles trapezoid. Draw two altitudes ... | |
| Coordinate Geometry - Square | 2/18/2009 |
| Q: Two opposite vertices of a square are ( -1, 2) and ( 3, 2).What are the coordinates of the other two ... A: Link the two opposite vertices. Find that line's midpoint. It is (1,2) You know your other ... | |
| Statistics - Average of Tests | 2/17/2009 |
| Q: i need help on solving thisLance has taken five tests in his English class, each worth 100 points. ... A: This problem can be solved algebraically using two variables and two equations. The average (mean) ... | |
| Area and Perimeter | 2/12/2009 |
| Q: I am a mother and my son is in 2nd grade he brought home a math paper today that I do not ... A: For the first problem, try making a 4 by 2 rectangle. As for the second problem, let's begin by ... | |
| Similarity in 1, 2, and 3 Dimensions | 2/11/2009 |
| Q: We were given a rectangular figure with the dimensions of 11 in. L, 17 in. W, and 31 in. H (all with ... A: P, A, and V, are perimeter, area and volume, right? Let's call the scale factor k. In this ... | |
| Algebraic Equations - Parking Lot | 2/9/2009 |
| Q: a parking lot is 72 feet less than twice the width. the lot requires 12 feet of buffering ... A: The area of a rectangle (it's a rectangular lot, right?) is the product of length and width. In ... | |
| Triangle - Area from "Radius" | 2/8/2009 |
| Q: i need to find the area of an equilateral triangle with radius square root 3. I have to leave my ... A: By "radius" you mean the distance from the centre to a vertex, right? If not, do not read this. ... | |
| Proofs - Midpoint of Arc | 2/5/2009 |
| Q: please i really need help. i was a wiz at algebra, but geometry has me completely confused. i'm ... A: I'll be straight up with you on this one: there is no way of proving that B is equidistant to the ... | |
| Unusual Proofs | 2/4/2009 |
| Q: I know that one can sometimes prove that 2 plus 2 is not equal to 4. Is there any kind of proof that ... A: I can think of a situation: imagine a sphere, like the Earth. Start at the North Pole and go south ... | |
| Angle of Depression | 2/3/2009 |
| Q: will the angle sizes still correspond to smallest angle across from smallest angle? I need the ... A: The angle elevation is equal to the angle of depression. The angle of depression is measured from ... | |
| Working Backwards | 2/1/2009 |
| Q: Ali,Ben,Chandra and Devi had $790 altogether.At a shopping trip,Ali spent $60,Ben spent $90,Chandra ... A: The one constant in this equation is the amount of money they have left. Call this (x). The amount ... | |
| Surface Area and Volume - Octagonal Pyramid | 1/30/2009 |
| Q: what are the beginning steps in finding the surface area and volume for a pyramid with an 8-gon ... A: Hey Alexandra! The volume would be calculated as any right pyramid's: multiply the base area by ... | |
| Triangles - 30-60-90 | 1/29/2009 |
| Q: can you please help me with this triangle question, how do I treat 30-60-90 triangle, can you give ... A: Hey Natasha! I can't think of anything in terms of a formula involving perimeter, but I can tell ... | |
| Angle Notation | 1/29/2009 |
| Q: in a triangle ∆ABC ∠ABC ∠BC ∠CA please tell what is the mean of these ... A: This symbol, "∠," means "angle." ∠ABC means the angle formed by lines AB and BC. This ... | |
| Basic Trig - Cosine | 1/26/2009 |
| Q: to find the height of a tower a surveyor positions a transit that is 2 m tall at a spot 25 m from ... A: Think about it. The tower is perpendicular to the ground, and thus the right triangle is formed. ... | |
| Basic Trigonometry | 1/25/2009 |
| Q: I will be very appreciated if you can help me in solving the follwing question. Draw a diagram of a ... A: By definition, sine is the ratio of the opposite side over the hypotenuse in a right triangle. So ... | |
| Triangle Area on a 5 by 5 Array | 1/25/2009 |
| Q: To clarify my 1 unit by 1 unit arrayI have a five by five set of dots array (like a geoboard with ... A: I was able to find 16 downward-pointing 2 by 2 triangles. There are also 16 upward-, leftward-, and ... | |
| Elementary Algebra | 1/23/2009 |
| Q: how do you add x+4+3x=48 A: When solving equations, you need to get one of the variables all alone on the equals side. Bring ... | |
| Gallons of Fuel in a Horizontal Tank. | 1/23/2009 |
| Q: I have a horizontal fuel tank that is 8 feet tall (diameter) and is 27 feet long. The interior ... A: To do this, you need to find the area of the circular segment and multiply all of that by the ... | |
| Minimum Surface Area | 1/21/2009 |
| Q: I'm baking a cake, and I want to use the LEAST amount of frosting possible. In what shape should I ... A: Hey Jon! The shape with the smallest area for a given volume is a sphere. However, when you ... | |
| Area - Pick's Formula | 1/20/2009 |
| Q: Using Pick's Formula, how does one approximate the area of the state? Please show an example using a ... A: Begin by drawing the state as a polygon. This means you'll have to roughen curves into diagonals, ... | |
| Capacity of a Cylinder | 1/20/2009 |
| Q: I need to know the capacity of a cylinder 6 feet deep and 6 feet across. How many gallons will this ... A: I'm going to simplify things a bit by converting feet to inches. The cylinder is 72 inches deep by ... | |
| Pattern Recognition | 1/3/2009 |
| Q: I have so much trouble with these kind of problems. I can understand the visual ones but not the ... A: I honestly don't know what to suggest for this. If you can see that the increase is irregular, you ... | |
| Cutting a 16" Octagon | 1/2/2009 |
| Q: I have a 16" square stock and I am wanting to make a perfect octagon(equal on all sides).Can you ... A: The square and the octagon have few similarities. One of the only ones is the apothem (distance ... | |
| Volume - Pyramid | 12/28/2008 |
| Q: how would i find the volume of a pyramid when the volume is 800cm3 and the base is not given? A: Please double-check your question. The question asks for volume, but also gives it: 800 cubic ... | |
| Maximizing Volume While Minimizing Surface Area | 12/22/2008 |
| Q: To be honest, this isn't really a homework question but more of a practical joke. I'm trying to make ... A: The only thing I can really tell you is that a cubic box would optimize your volume with a given ... | |
| Cylindrical Gas Tank | 12/21/2008 |
| Q: I have a horizontal cylinder gas tank it is 17 inches round and is 58 inches long, first how many ... A: The volume of a cylinder can be found by the formula V=πhr^2, where h is the height (in this ... | |
| Analytic Geometry - Undefined Slope | 12/20/2008 |
| Q: What can you say about a line if every point on the line has the same x coordinate? A: Hey Trina! If every point on a line has the same x coordinate, then the line is completely ... | |
| Midpoint & Improper Fractions | 12/17/2008 |
| Q: Heres my problem: M is the midpoint of L and N. Solve for the variable then find the lengths of LM ... A: Hey Crissy! Don't panic! I'll help you. The principal you're using is that LM+MN=LN. This is ... | |
| Geometry Related to Billiards | 12/17/2008 |
| Q: I am doing a project in school in which I have to relate geometry to something we use in everyday ... A: Hey Karli, Billiards is more closely related to physics than geometry. When 2 balls collide, they ... | |
| Solids - Snowmen | 12/16/2008 |
| Q: This is a three part question. I understand part 1 and some of 2. Chiquita and Rhonda are each ... A: I'll start by saying that "smaller" is a very ambiguous word. I would think volume and not ... | |
| Complement and Supplement | 12/15/2008 |
| Q: I am trying to help my daughter study and we are stuck on this question- The measure of the ... A: Let the angle equal x. The complement of the angle would thus be 90-x. The supplement, as dictated ... | |
| Area - Irregular Objects | 12/13/2008 |
| Q: First, I am not a student, I am over 50 years old and trying to remember my highschool geometry for ... A: Your general approach, subdividing the lot into triangles and quadrilaterals, is the ideal, and ... | |
| Reflexive Property | 12/12/2008 |
| Q: I'm stuck on a problem that says, Choose two cities from the United States road map. Describe the ... A: The reflexive property essentially states that something is equal to itself. AB=BA, if you will. ... | |
| Coordinate Geometry - Right Triangle | 12/10/2008 |
| Q: How to calculate coordinates of third vertex, given the coordinates of hypotenuse as (1,3) and ... A: I'm going to assume the legs of the triangle are parallel with the axes (if they aren't, there are ... | |
| Solids - Cylinder and Hemispheres | 12/3/2008 |
| Q: A satellite is in the shape of a cylinder with two hemispheres fitted snugly on either end. If the ... A: Find the volume of the cylinder using V=πhr^2, where h is the height and r is the radius. The ... | |
| Perimeter - Rectangle | 12/1/2008 |
| Q: I'm trying to help my daughter write a formula for finding the perimeter of a rectangle with 82 ft. ... A: The perimeter of a rectangle is found by twice the sum of both dimensions, or p=2(l+w). If the ... | |
| Polyhedra - Cylinders and Railway Track | 11/27/2008 |
| Q: I need to be honest, i dont anything about Geometry, please examplain the answer to me so that i can ... A: His plan was obviously incorrect, but not for the reasons you mentioned. The units are not the ... | |
| Polyhedra - Cylinders and Railway Track | 11/26/2008 |
| Q: I need to be honest, i dont anything about Geometry, please examplain the answer to me so that i can ... A: These questions are a bit intimidating, but you have to take them step by step. For the first ... | |
| Radius from Inscibed Polygon | 11/18/2008 |
| Q: How to find the radius of a circle that will contain a triangle (all corners touching the circle). ... A: The triangle you're referring to is said to be "inscribed" in the circle. The easy way to do this ... | |
| Triangles - Algebraic Angles | 11/17/2008 |
| Q: Hey, I really need help on this big time. the square root's and everything are really hurting me. if ... A: As much as possible, try not to let the roots confuse you. You can see that the ratio of the angles ... | |
| Pemdas | 11/17/2008 |
| Q: Ok so i have tried this problem several times and my teacher keeps returning it and he wont tell me ... A: Hey Colby, Begin with P: parentheses. Simplify anything within parentheses first. ... | |
| Area - Torus | 11/14/2008 |
| Q: 'm stuck on the following question . Please answer this. I know the height needs to be found .but ... A: Hey James, If you look at it in 2-D, it's just two circles. One with radius 8, and it has a hole ... | |
| Basic Trigonometry | 11/11/2008 |
| Q: So my name is Brittany and I'm a 9th grader at Hoover Highschool in advanced geometry. Right now ... A: Hey Brittany! When dealing with right triangles, if you're given the non-right angle, you can find ... | |
| Linear Functions - Graphing | 11/6/2008 |
| Q: I have a little trouble with graphing slope. It's not just like y=mx+b, it's a little complicated. A ... A: Honestly, convert into the slope-intercept form of the symmetric form before graphing. It's much ... | |
| Similarity - Hexagons | 11/5/2008 |
| Q: Can you check the anwser to this question and let me know if it is right or not . If it is not can ... A: Begin by finding the scale factor, k. When dealing with areas, in two dimensions, the ratio of the ... | |
| Volume - Hexagonal Prism | 11/3/2008 |
| Q: I'm stuck on a question. can you check my answer and if it's wrong can you please give the correct ... A: The volume of a prism is calculated by multiplying the base area by the altitude. Begin by finding ... | |
| When You're Behind... | 11/1/2008 |
| Q: I started my first geometry class late -third week of class. The terms are foreign to me and the ... A: Frankly, get class notes off a friend. Consult the textbook if you have one. Talk to your teacher. ... | |
| Similarity - Car | 10/31/2008 |
| Q: i cant figure out this problem at all i must be having a brain freezeif you have a model car that ... A: Hey Amber, Divide the 10 cm by the ratio. You'll end up with 120 cm. (The correct answer to this ... | |
| Polyhedra - Surface Areas | 10/30/2008 |
| Q: I was given a question on a quick test the other day and had a hard time wrapping my head around it. ... A: This question is asking you which solid has a greater surface area. It is the cereal box. Frankly, ... | |
| Various Problems | 10/29/2008 |
| Q: Mr Hussain , Can you please check my answers to the questions below.If I have them wrong can you ... A: For the first question, begin by finding the area of the full circle, using πr^2. It is ... | |
| Circles - Chord Length | 10/28/2008 |
| Q: Mr, Hussain Can you please answer a question for me .I think I know the answer ,however if I get it ... A: Draw the full circle, the chord in question, and the full diameter. By definition, diameters bisect ... | |
| Area - Property | 10/27/2008 |
| Q: I am a realtor, i need to find out how many square feet there are in a piece of property. the ... A: I need to know the exact shape of this property to be able to use these dimensions. The best I can ... | |
| Proofs - Parallel Lines | 10/27/2008 |
| Q: How would I write a 2-column proof for this? Given: l perpendicular to n, m perpendicular n Prove: ... A: The key to the first one is this: you know that corresponding angles are equal if the lines are ... | |
| Probability - Handshakes | 10/25/2008 |
| Q: There are 47 people at a party. Over the course of the evening, various people shake hands. Is it ... A: This question's a bit unclear. I would say each person could shake hands with 46 others. I know ... | |
| Angles - Irregular Hexagon | 10/23/2008 |
| Q: I'm a single mother and my Child is asking me for help .I'm terrible at math . I wish I can help him ... A: Count the number of sides. Use the formula (n-2)180 to find the sum of the interior angles (where n ... | |
| Polyhedra - Axes of Rotation | 10/23/2008 |
| Q: What axes of rotation exist for the regular square pyramid? How do you know where to look to ... A: A regular square pyramid has a single axis of rotation in the z plane going from the summit to the ... | |
| Supplement of Complement | 10/17/2008 |
| Q: What is the measure of the supplement of the complement of an angle with the measure (n-2). if you ... A: You know what supplements and complements are, so this is really just a matter of thinking about it, ... | |
| Analytic Geometry | 10/16/2008 |
| Q: So I have thisWrite the equation of a line that passes throught the point A(-1,3) and which is ... A: You found the slope to be 2. That's right. The y-intercept of the line passing through A, however, ... | |
| Surface Area - Sphere | 10/15/2008 |
| Q: I have this problem that is a little difficult. Here it is: the surface area of a sphere is 86 pi ... A: Hey Angel, The surface area of a sphere may be calculated by the formula A=4πr^2. The ... | |
| Congruency vs. Equivalence | 10/14/2008 |
| Q: I have a tough question to answer, what's the difference in meaning of the words "congruent" and ... A: "Congruent" means equal in every way, while "equal" means having the same area or volume. As you ... | |
| Similarity - Surface Areas | 10/12/2008 |
| Q: The radius of one sphere is 4 and the radius of a second sphere is 12. How do the surface areas of ... A: To begin, you need to find the scale factor, denoted "k." This is the one-dimensional ratio of one ... | |
| Algebraic Perimeter | 10/8/2008 |
| Q: Suppose that the length of a rectangle is 3 inches longer than the width and that the perimeter of ... A: Call the width of the rectangle x, and the length x+3. Knowing that the perimeter of a rectangle is ... | |
| Segment Addition Postulate (Twice) | 10/7/2008 |
| Q: M is the midpoint of of AB and B is the midpoint of AC. draw a figure to repesent the above ... A: The diagram would look something like this (count the dashes, not the letters): A--M--B----C ... | |
| Basic Trig - Height of Right Triangle | 10/7/2008 |
| Q: I know the base is 100 ft. I know the degrees to the top of the tree (30 degrees). How do I figure ... A: Relative to your angle, you have the adjacent side (base) and you need to find the opposite side ... | |
| Calculating Force up an Incline | 10/6/2008 |
| Q: I need to know how to calculate the force necessary for a person to push an object up an incline. I ... A: The force going down an incline is equal to 9.8 N/kg (acceleration due to gravity) multiplied by the ... | |
| Minimum Pipe Length | 10/3/2008 |
| Q: I am studying at secondary school level 3 and I need some help with this question. at least I need ... A: I can't give you a numerical answer, but I can situate where the station should be. It should be ... | |
| Surface Area - Round Tube | 10/2/2008 |
| Q: I am trying to find out what is the formula for figuring the internal surface area of a tube or ... A: A round tube is really just a rectangle rolled up. The height is preserved, but the length becomes ... | |
| Proofs - Concept | 9/30/2008 |
| Q: Could you explain the (basic) concepts Proofs. I have to rewrite the conditional statement in the ... A: The very basic concept of formal proofs is as follows: you're given a situation and you have to show ... | |
| Lateral Surface Area - Square Pyramid | 9/28/2008 |
| Q: what is the formula for lateral surface area of a square pyramid A: The formula for the lateral surface area of a square pyramid is as follows: LA=2bl "b" is the ... | |
| Triangle - Height from Area | 9/27/2008 |
| Q: i'm trying to figure out the steps to finding the height of a triangle (and I guess the base too). ... A: Hey Monique! You probably don't realize it, but the ratio of the length to the base is as important ... | |
| Pre-algebra | 9/26/2008 |
| Q: I'm struggling over a mind boggling problem. I've been working on this for 2 days and can't figure ... A: I'm assuming the use of brackets is permitted. There are surely numerous solutions. Here are 3 I ... | |
| Proofs - Reflexive and Transitive Properties | 9/25/2008 |
| Q: what is the property that says that a variable equals itself and what is the property that says ... A: The reflexive property says a variable equals itself (AB=BA). The second one in your question would ... | |
| Proofs - Substitution Property of Equality | 9/25/2008 |
| Q: Can I use the Substitution Property of Equality with congruent segments in a proof, or do I have to ... A: Provided you have afore-mentioned the congruency between the two line segments, it is not necessary ... | |
| Angles - Supplements and Such | 9/23/2008 |
| Q: the measure of an acute angle is equal to the difference between the measure of a supplement of the ... A: I've got a method that should help you. Convert this problem from math to English. Let the angle ... | |
| Analytic Geometry - Perimeter | 9/23/2008 |
| Q: What is the perimater of this triangle round to the nearest tenth when the vertices of the triangle ... A: Solving this problem requires a simple formula applied three times. This is the formula for ... | |
| Complement and Supplement of an Angle | 9/13/2008 |
| Q: I learned this in class but its very unclear to me what I am suppose to do. Can you help me with ... A: Hey Amber! Let "the angle" equal (x). It's complement will thus be (90-x) and its supplement ... | |
| Area - Rectangle (Quadratic) | 9/12/2008 |
| Q: the area of a rectangle is 43cm2 we need to know how to find the length and width? the length is 1cm ... A: Hey Jue! Let (x) equal the width. The length will thus be (x+1). Use the formula for area and ... | |
| Segment Addition Postulate - Squared Variable | 9/10/2008 |
| Q: How do you solve when the value is squared the basic formula does not seem to work. Example AC=10 ... A: The basic formula should still work. I'm assuming B is between A and C. AB+BC=AC ... | |
| Circle to Octagon | 9/7/2008 |
| Q: If I have a 30 ft. circle and want to convert it into an octagon, what would be the dimensions of ... A: Hey Linda, Seeing that I don't know which dimension is 30 ft., I'll just tell you the procedure. ... | |
| Volume - Irregular Shapes | 9/3/2008 |
| Q: How can I find out the volume of oddly shaped objects, like a peanut shell?? ANSWER: Hi John, Use ... A: Using the eraser tip of a pencil or something, push the peanut shell down to the point where the ... | |
| Volume - Irregular Shapes | 9/2/2008 |
| Q: How can I find out the volume of oddly shaped objects, like a peanut shell?? A: Use the water displacement method. Pour some water in a graduated container and measure the water ... | |
| Supplements and Complements | 9/1/2008 |
| Q: i am now working with supplementary angles and complementary angles, and do not understand it at ... A: Firstly, don't panic. Acknowledge that problems such as these are ones you'll have to solve, so ... | |
| Circles - Finding Radius | 8/28/2008 |
| Q: Given a chord that intersects a circle and that distance between the intersection points is 11", and ... A: You're right, using Euclidean geometry, this was likely done a couple thousand years back. Begin by ... | |
| Functions - Vertical Line Function Test | 8/28/2008 |
| Q: how do I find out if it is a function or not?? A: You need four letters: VFLT. This stands for "vertical line function test." Draw a vertical line ... | |
| Segment Addition Postulate | 8/27/2008 |
| Q: I am stuck on this problem and I can figure it out lm=3x+8 mn=2x-5 ln=23 what is the length of each A: I'm assuming M is between L and N. If not, then what I'll do will be wrong. In the future, be sure ... | |
| Math question | 8/26/2008 |
| Q: How would you do this? The volume of a cube increases by 12.154 cm3 when the length of the sides is ... A: Let s equal the length of the initial side. Because we are dealing with a cube, the initial volume ... | |
| Supplements and Complements | 8/26/2008 |
| Q: the supplement of an angle is 36 less than twice the supplement of the complement of the angle. Find ... A: Read the question carefully and translate the English into math. Let (x) equal "an angle." ... | |
| Isosceles Triangle Proof | 8/25/2008 |
| Q: Prove is base angles of a triangle are congruent, then the triangle is isosceles. The given is angle ... A: I'm pretty sure I know how this is done, but I need to know specifically what you mean by "bisected ... | |
| Pythagorean Theorem | 8/22/2008 |
| Q: Help! my teacher assigned this concept for homework and didn't explain it! i need to find to find ... A: Don't worry, this is actually quite straightforward. Draw your line AB. Make a point C at (8,0). ... | |
| Word Problem - Pole Vault | 8/20/2008 |
| Q: IF A POLE -VAULTER USES A 15-FOOT-LONG POLE.SHE GRIPS THE POLE SO THAT THE SEGMENT BELOW HER LEFT ... A: The segment below her left hand is twice the length of the segment above her left hand. ... | |
| Segment Addition Postulate | 8/19/2008 |
| Q: I'm trying to help my son and we can't figure this one out. Let point N be between M and P. Let ... A: The segment addition postulate states that the sum of the parts equals the whole. MP=MN+NP. Plug ... | |
| Complementary Angles | 8/18/2008 |
| Q: Find an angle such that 4 times it's compliment equals 200 A: Let "an angle" equal (x). Its complement is thus (90-x). Set up the equation and solve for x. ... | |
| Polygons - Diagonal Problem | 8/16/2008 |
| Q: what polygon has a number of sides that is 5 times its number of diagonals? A: Let d equal the number of diagonals and n equal the number of sides. In this case, n=5d, d=0.2n. ... | |
| Hyperbola | 8/13/2008 |
| Q: Foci (0,0) and (0,10), asymptote is x+y=5 I now how to solve the center and the value of C. How can ... A: Firstly, rearrange the asymptote equation into something more manageable. x+y=5 y=-x+5 The ... | |
| Area - Rectangluar Prism | 8/12/2008 |
| Q: what is the formula for find this area ANSWER: Hi Rokisha! The total surface area of a rectangular ... A: Rokisha, Please specify which area. A rectangular prism has 6 faces, three of which have different ... | |
| Construction | 8/9/2008 |
| Q: (In words step by step)I need to know how to use a protractor to draw angle D such that the measure ... A: A protractor is a semicircle with the angle measures written on it. You would just have to make ... | |
| Coordinate Geometry - Linear Equations in 2 Variables | 8/6/2008 |
| Q: What is the equation of the line that contains the points with coordinates: (-3,7) and (5,-1)? Step ... A: Hey Justin, Let's find the equation in the slope-intercept form, y=ax+b. Begin by finding the ... | |
| Algebra - Evaluating Expressions | 8/6/2008 |
| Q: trying to help my son. could you please assist me -cde3 C=5 D=1 E=-2 AND -2a2+(b+ac) when ... A: Simply substitute the given values into the expression and then do the arithmetic. (I'm assuming ... | |
| Measuring System for Cylinder Gas Tank | 8/4/2008 |
| Q: I have a horizontal cylinder gas tank in my boat and it does not have a gas gage. I stick measure ... A: If the tank is a true cylinder, then its volume may be solved for using πr^2h, where r is the ... | |
| Construction of a Bridge | 8/1/2008 |
| Q: A new bridge is to be constructed over the East River in New York City. The space between the ... A: One clarification is necessary. "The height at the center of the arch needs to be 350 feet." Is ... | |
| Liters and Volume | 7/31/2008 |
| Q: Can liters be converted into a dimensional factor. For example, can 450 liters be converted into a ... A: Hey Bob! Liters cannot be converted strictly into a length, width, or depth because you cannot go ... | |
| Perimeter - Rectangle | 7/28/2008 |
| Q: Find the perimeter of a rectangle with width 2(x-y) and length 3(x+y) A: The perimeter of a rectangle is calculated by taking twice the sum of the length and width. p=2(l+w) ... | |
| Square Feet | 7/26/2008 |
| Q: I have a pool 12ft by 3ft how many square feet is that? ANSWER: Hey Ryan, I'm guessing this pool ... A: You know the shape and the dimensions of the pool because you have the full question. I don't. If ... | |
| constructing a rhombus | 7/25/2008 |
| Q: How do I construct a rhombus with sides the length of the given line segment (1-inch) and having an ... A: Make a right angle and bisect it. You now have a 45-degree angle. Measure out 1" on each of the ... | |
| Surface Areas - Hexagon and Pentagonal Pyramid | 7/24/2008 |
| Q: how to find the surface area of a regular hexagon and a pentagonal pyrimid A: Hey Ayana! A regular hexagon may be subdivided into 6 congruent equilateral triangles. The ... | |
| Angles with Algebra | 7/22/2008 |
| Q: What is the measure of the larger angle of two supplementary angles if two-fifths of the larger ... A: Let the large angle equal x. The smaller angle will thus equal 180-x. Translate this question from ... | |
| Prism - Longest Line | 7/22/2008 |
| Q: the dimensions of a wooden prism horizontal up and down 5cm and vertical is 9cm . known what is the ... A: Given what I can make out from your question, I'd say the largest face is 5 cm by 9 cm. Solve the ... | |
| Bisecting a 60 Degree Angle | 7/17/2008 |
| Q: I know this: To draw a 60 degree angle, fix compass on point A and draw an arc intersecting straight ... A: Hey Somnath, These arcs of random but equal measure serve as reference points. What is needed to ... | |
| Bisecting a 60 Degree Angle | 7/17/2008 |
| Q: I know this: To draw a 60 degree angle, fix compass on point A and draw an arc intersecting straight ... A: I don't quite follow the part about the actual bisection. To my understanding, it would not work. ... | |
| Linear Functions | 7/16/2008 |
| Q: How do you graph x=3, and how do you graph -19<3x+2<20. but the the greater that signs are all less ... A: x=3 is not a function. It has what is known as an "undefined slope." This is really a vertical ... | |
| Area - Sector of a Circle | 7/16/2008 |
| Q: I need to calculate the area of a sector within a circle which is less than a semi-circle. Can you ... A: Hey Bill, If you were asked to find the area of the sector which represented 1/8 of the circle, ... | |
| Similarity - Calculating Scale Factor | 7/12/2008 |
| Q: if the height of a cone is tripled and the radius is doubled, then the volume of the new cone is how ... A: Hey Meilani! For the initial cone, let all the parameters equal 1. Put the scale factor, k, on ... | |
| Similarity - Areas | 7/12/2008 |
| Q: the perimeters of two similar polygons are 36 and 48. if the area of the larger polygon is 96, what ... A: You need to find the scale factor, k. This is the ratio of one-dimensional measurements: side, ... | |
| Ratio - Pyramid | 7/12/2008 |
| Q: A regular square pyramid with height 8m is intersected by a plane parallel to the base and 2m above ... A: Let the edges of the base equal 1. This will make calculations easier. Find the volumes of the ... | |
| Probability - Darts on a Square Board | 7/12/2008 |
| Q: A square dart board 60cm on a side has a sqaure baseball field 40cm on a side and 4 smaller squares ... A: Hey Athyna! You are dealing with area, which means 2 dimensions. You must find the fraction of the ... | |
| Problem Solving - Working Backwards | 7/10/2008 |
| Q: Larry, lionel and lester painted a fence. Larry painted the first 1/3 of the fence. Lionel painted ... A: Let the fence's length equal x. Watch carefully. (1/3)x+(1-1/3)(3/5)x+40=x 1/3 3/5 of the ... | |
| Probability - Darts | 7/10/2008 |
| Q: a target has circles with radii of 2cm, 10cm, and 20cm. what is the probability that the dart would ... A: A few assumptions have to be made to answer this question. We need to assume there is a 100% chance ... | |
| Ratios - Hexagons | 7/10/2008 |
| Q: given: the areas of two regular hexagons are 54 radical 3 and 150 radial 3. what is the ratio of ... A: Because we're dealing with 1 dimension in both cases, the ratio of their perimeters is equivalent to ... | |
| Linear Functions - Undefined Slope | 7/10/2008 |
| Q: What is the slope of the line that passes through (c, d) and (c, 1/d)? A: Hey Casey! Slope equals the difference in y over the difference in x. In this case, there is no ... | |
| Volume - Triangular Pyramid | 7/8/2008 |
| Q: I can't seem to find the volume of this pyramid.. A regular triangular pyramid has a height of 12 ... A: Hey Rob! This is actually quite tricky. Take a profile view of the pyramid. You will see an ... | |
| Basic Trig - Slide | 7/7/2008 |
| Q: A slide has an angle of elevation of 25 degrees. It is 60 feet from the end of the slide to the ... A: Basic trigonometry is what you need here. You need the adjacent side and the hypotenuse of the ... | |
| proving a triangle is isoceles | 7/5/2008 |
| Q: Azeem,I am in desperate need of help. I have to prove a triangle is isosceles in a two-column ... A: ([justifications will be bracketed] "=" means congruent) In triangle AGC: m<BGE=m<DGE [given] ... | |
| Perimeter - Rectangular Prism | 7/3/2008 |
| Q: What is the formula for find the perimeter of a rectangular prism? A: Three-dimensional figures don't really have a "perimeter," but two-dimensional figures do. Do you ... | |
| Volume - Cylinder | 7/3/2008 |
| Q: i have been asked for my homework to verify that the vol. of a cylinder is pi*r*r*h using modelling ... A: I would begin by making the base of the cylinder, whose circular area would be calculated by ... | |
| Supplementary Angles | 7/1/2008 |
| Q: Find the measure of the angle whose measure is 40 degrees more than the measureof its supplements. A: Let "x" equal your angle. "x+40" thus equals its supplement. Supplementary angles have a sum of ... | |
| Triangles - Congruency | 6/28/2008 |
| Q: i do not understand how to get the answers to questions such as this is triangle ABC is congruent to ... A: There is insufficient information given to say that the triangles are congruent. I would need a ... | |
| Segment Addition Postulate | 6/24/2008 |
| Q: let c be between d and e.use the segment addition postulate to solve for m. dc=6m-21 ce=7m-18 de=65 ... A: The segment addition postulate states that the sum of the parts equals the whole. This means that ... | |
| Circles / Coordinate Plane | 6/24/2008 |
| Q: What is the method for finding any coordinate pair of the points of a circle, given the radius, ... A: Think vectors: the x-coordinate is equal to the magnitude times the cosine of the angle and the ... | |
| Length and Width of a Rectangle | 6/23/2008 |
| Q: The length of a rectangle is 2 inches less than twice the width. The diagonal is 5 inches. Find the ... A: Hey Peter, "2 inches less than TWICE the width." Here's the proper math: c^2=a^2+b^2 ... | |
| Length and Width of a Rectangle | 6/21/2008 |
| Q: The length of a rectangle is 2 inches less than twice the width. The diagonal is 5 inches. Find the ... A: Let the width equal (x) and let the length equal (x-2). These two sides are perpendicular to one ... | |
| Angles and Quadratics | 6/18/2008 |
| Q: i got this question that i cannot figure out at all Angle ABC is a right angle. Angle ABD is ... A: So the sum of both angles is 90. Set up the equation, make it equal zero, and then use the ... | |
| Perimeter of Circles | 6/16/2008 |
| Q: i was surfing on the net a few days ago and i found this question. unfortunately the answer for this ... A: Here's the way I see it, informally. (r6 is the big radius, d1 through d5 are the smaller radii.) ... | |
| Analytic Geometry - Line Division | 6/14/2008 |
| Q: The endpoint of segment AB are : point A (1, -5) point B (9, 11) find the coordinates of the point ... A: Firstly, sketch out the situation. Find out which point is higher up (B) and where the division is. ... | |
| Proofs - Tangents | 6/14/2008 |
| Q: Prove that tangents to a cirlce at the endpoints of a diameter are parallel.State what is given,what ... A: I'm sure there are a few ways to do this, but I'll give you the way I see it. Let's give the circle ... | |
| Area - Equilateral Triangle | 6/12/2008 |
| Q: The question is Find the AREA of an equilateral triangle with the perimeter 90 cm. Thanks A: Equilateral triangles have 60 degrees per angle. This means that the height of your triangle is ... | |
| Proofs | 6/8/2008 |
| Q: I have to proofs that I am unsure how to do. I'll give you everything that the problems have, and ... A: Hey Amber, The first proof seems fine to me. As for the second, I don't understand why you've done ... | |
| Supplemements | 6/8/2008 |
| Q: The measure of an angle is 8 degrees less than three times the measure of the angle's supplement. ... A: To make this more manageable, translate this from math to English. Make "an angle" equal "x." "is" ... | |
| Vertically Opposite Angles | 6/6/2008 |
| Q: If 5x degrees and (7x - 12)degrees are the measures for vertical angles formed by two intersecting ... A: Vertically opposite angles formed by intersecting lines are equal. Make both angles equal and solve ... | |
| Volume - Cylindrical Tank | 6/3/2008 |
| Q: How much water, in gallons, will fit into a cylindrical tank 12" in diameter and 12" in height? A: The area of a cylinder is found my multiplying the base area by the height. The base is a circle, ... | |
| Area - Justification for bh/2 | 6/3/2008 |
| Q: Why is the formula for the area of a triangle 1/2bh? Thank you for your help! A: This is best seen with two right triangles. If you put two right triangles together, you will see ... | |
| Proofs - Circle | 6/1/2008 |
| Q: Given: Segment AC and segment BD are diameters of circle O. Prove: Angle ABD is congruent to Angle ... A: For formatting simplicity, "=" means "congruent." The justifications are in [brackets.] In circle ... | |
| Rhombus Areas | 5/30/2008 |
| Q: A rhombus has sides of length 10, and its diagonals differ by 4. What is its area? A: Let the length of the short diagonal equal (x). The long diagonal will thus equal (x+4). The ... | |
| Polygons | 5/29/2008 |
| Q: True or false.. a quadrilateral cannot have exactly 3 angles that are right angles please explain ? ... A: This is false. A quadrilateral has 360 degrees of interior angles. If three angles are right, then ... | |
| Percentages - Math Final | 5/26/2008 |
| Q: whats the formula for calculating what you need on your final to keep the same letter grade. ... A: I'm unfamiliar with letter grades; I only know percentages, so I'll show you how to calculate what ... | |
| Number of Sides in a Polygon | 5/22/2008 |
| Q: calculate the sides of a regular polygon whose interior angles are 150 degrees? A: I take it you mean the NUMBER OF sides. The sum of the interior angles in a polygon can be ... | |
| Apothem | 5/22/2008 |
| Q: can you please helpt me. A petagonal based pyramid has a volume of 2756m^3. Determine the length of ... A: I need you to specify which apothem. Are you referring to the non-base edges of the pyramid, or are ... | |
| Product of Odd Numbers | 5/21/2008 |
| Q: Find 3 x 5, 13 x 7, 9 x 5, and 123 x 7. Find the product of any two odd numbers. State a ... A: The conclusion I draw from this is the following: the product of two odd numbers is always a third ... | |
| Distance Between 2 Points | 5/21/2008 |
| Q: what is the approximate length of segment XY if X is located at (-2,5) and Y is located at (4,-10) A: This is found by making a right triangle in which XY is the hypotenuse. The length of each leg is ... | |
| Area - Halo | 5/14/2008 |
| Q: If I have a 9.5 foot ring that is 2 foot wide how do I figure the square footage? I am lost on this, ... A: Imagine if the ring were unfolded. It would be a rectangle whose width were 2 feet and whose length ... | |
| Area - Floor | 5/8/2008 |
| Q: what is the area of a floor that measures 6 yards by 14 feet? A: I'm assuming this floor is rectangular. You must get all your units to the same thing. Make ... | |
| Conic Sections - Solving for y | 5/8/2008 |
| Q: The equation is x(squared)+y(squared)=64. It's a conic equation for a circle and I can't figure out ... A: When you graph a circle, you can't solve for y, because a circle is not a function. The best you ... | |
| Area - Goat Tied to Fence | 5/7/2008 |
| Q: It's been a while since I've dealt with a geometry-related math problem. And despite being really ... A: Hey Livvie, If I gave you a circle's area asked you to find the area of half that circle, you would ... | |
| Complementary Angles | 5/7/2008 |
| Q: one angle is 8 times the other. The two angles are complementary. find the measurment of both ... A: Let one angle equal x. Consequently, the other equals 8x. If they're complementary, then their sum ... | |
| Area - Goat Tied to Fence | 5/6/2008 |
| Q: It's been a while since I've dealt with a geometry-related math problem. And despite being really ... A: As I gather, there is a lot of unnecessary information in this problem. This leads me to think that ... | |
| Creating an Arc | 5/6/2008 |
| Q: I need to create an arc over a doorway.I know the width and the height.For example the width is 65" ... A: Hey Cliff, According to my understanding of the question, you only need the width of the door. ... | |
| Parallelogram - Area | 5/5/2008 |
| Q: An acute angle of a parallegram measures 60 degrees , if a base measures 15cm and the other side ... A: A parallelogram's area is found by multiplying the base by the height. To find the height, create a ... | |
| Rectangular Yard | 5/4/2008 |
| Q: I have a question about measurements which I thought would fall into the category of geometry. My ... A: Allow me to begin by stating that in a case like this, it is always a square which will yield the ... | |
| Euclides | 5/3/2008 |
| Q: What is Euclid's 5 postulates used for today? And what have they been used for? A: #1: A straight line segment can be drawn joining any two points. #2: Any straight line segment can ... | |
| Word Problem - Hunting | 4/29/2008 |
| Q: There was nobody available from the word problem area. Any chance you can answer this one. I am ... A: This is a bizarre question. I can tell you that if he actually did travel 3 miles South and then 3 ... | |
| Volumes and Surface Areas | 4/28/2008 |
| Q: how do i figure out the surface area and volume of prisms... like cylinders pyramids, cones, ... A: The volume of any prism is found by multiplying its base area (ba) by its height (h). As for their ... | |
| Similarity - Circle Areas | 4/28/2008 |
| Q: The problem is: the scale factor of 2 circles is 3:2. The area of the larger circle is 81pi. Find ... A: You need the scale factor, k. This is given in theit is 3/2. k works in one dimension only. You ... | |
| Proof - Right Isosceles | 4/24/2008 |
| Q: Draw and label a picture, use a two column proof format with statements and reasons. Given: ... A: In triangle PQR, <Q=90 because given <R=45 because given <P=180-90-45=45 because sum of int. angles ... | |
| Trigonometry - Tangent Ratios | 4/24/2008 |
| Q: this is more for my girlfriend than it is for me. she is needing help with the following problems at ... A: I'm not going to do your girlfriend's homework for her, but I'll tell you some tips that you can ... | |
| Axis of Symmetry | 4/23/2008 |
| Q: what is the axis of symmetry? A: An axis of symmetry is a line or reflection. If you were to cut the figure in two about that line, ... | |
| Proofs - Corrsponding Parts | 4/23/2008 |
| Q: When proving that two (non special) triangles are congruent, how many pairs of corresponding parts ... A: Frankly, I don't quite understand your question. Triangles' congruency is proved by side-side-side ... | |
| Adjacent and Vertical Angle Pairs | 4/20/2008 |
| Q: I am home schooled and have a question on a problem i have been stuck on for awhile now, and it ... A: Hey Drake, Begin by converting the question from English into math. Let's call "the angle" x. ... | |
| Rhombus on a Cartesian Plane | 4/20/2008 |
| Q: how can you calculate the coordinates of a rhombus if the only give you the length of the line and 1 ... A: I need to know of the rhombus is ABCD or if it's in a different order. Are the equations given ... | |
| Rhombus on a Cartesian Plane | 4/19/2008 |
| Q: how can you calculate the coordinates of a rhombus if the only give you the length of the line and 1 ... A: This is not really doable. This is because a rhombus has a few variables, and when you put it on a ... | |
| Statistics - Mean | 4/17/2008 |
| Q: What is the mean of 81, 76, 94, 81, 79, and 78? A: The mean is what most people casually refer to as the "average." It is found by taking the sum of ... | |
| Rhombus - Diagonals | 4/16/2008 |
| Q: ABCD is a rhombus. it has two 120 degree angles and two 60 degree angles and all of it's sides equal ... A: The sine law can be used to solve for your diagonals. The ratio of the sine of an angle to the ... | |
| Triangle | 4/15/2008 |
| Q: One leg of a right triangle is two inches more than twice the other leg. The hypotenuse is 13 ... A: Use the Pythagorean Theorem, c^2=a^2+b^2. Let's make a=x, and b=x+2. c=13, as indicated by the ... | |
| Sine Equations | 4/14/2008 |
| Q: solve the following equation algebraically for all the values of theta in the interval 0<theta<180. ... A: For formatting's sake, let's use "x" instead of "theta." Now, get all the numbers on one side. ... | |
| Trigonometry - Lengths from Angles | 4/11/2008 |
| Q: I'm not a student, however my inability to navigate the web led me here for with my questions, ... A: Draw a sketch and label your triangle. Make your angles <A, <B, and <C. Make the sides opposite ... | |
| Extra Credit Impossible Problem | 4/11/2008 |
| Q: Let P be any point in the interior of rectangle ABCD. Four triangles are formed by joining P to each ... A: I began by drawing the diagram, evidently. I also added points W, X, Y, and Z. Each of these ... | |
| Algebraic Comparison | 4/8/2008 |
| Q: For what positive number is the square root of the number the same as the number divided by 40 ? A: Let's call "the number" x. Let's now put x in an equation. Convert the language from English to ... | |
| Surface Area - Pyramids | 4/7/2008 |
| Q: all, right. so i've asked for your help before and you helped me loads. think you can try again? ... A: Hey Keli! This is actually not that easy. I don't know what is meant by "length," but luckily it ... | |
| Parallelogram's Points | 4/6/2008 |
| Q: a paralleogram has coordinates PQRS P(-3,-1) Q(0,a) R ( 7,11) S(c,b) determine the value of a+b+c A: Firstly, make a sketch of the problem. To prevent complications, let's not rotate the ... | |
| Lateral Area | 4/4/2008 |
| Q: im getting a bit confused. im in geometry and working with lateral area. my formula sheet says that ... A: Don't panic, I can help you. LA only equals height times BASE perimeter in prisms. Because this is ... | |
| Pythagorean Geometry | 4/4/2008 |
| Q: Okay, so the proof on the website below is getting me quite frustrated. I read and tried what their ... A: Although this proof is very poorly explained, it is the way the Pythagorean Theorem is derived. I ... | |
| Triangular Prism Lateral Area Formula | 3/31/2008 |
| Q: All i really need is the formula for finding the lateral area of a triangular prism. A: I'll use height (h), width (w), and depth (d). a=3dw+hw You have 3 rectangular sides which explains ... | |
| Octagon's Area | 3/30/2008 |
| Q: if, a regular octagon has all of its vertices on circle with a radius of 2m, work out the octagon's ... A: Hey Katie, May answer was 8 times the square root of two, which is roughly equal to 11.31 metres ... | |
| Group Average | 3/30/2008 |
| Q: what is the best way to figure out the length of a diagonal line across a rectangle? can you give me ... A: Allow me to begin by pointing out that this is not a follow-up, it is a separate question. In the ... | |
| Definitions - Midpoint | 3/27/2008 |
| Q: What's symmetric property of congruence And definition of midpoint A: The symmetric property states that things that are equal to each other are also equal to the reverse ... | |
| Octagon's Area | 3/27/2008 |
| Q: if, a regular octagon has all of its vertices on circle with a radius of 2m, work out the octagon's ... A: You've got the right idea, although it would be easier if you divided the octagon into 16 right ... | |
| Construction - "15 Degree Triangle" | 3/25/2008 |
| Q: How can I construct a 15 degrees triangle using a compass A: This question's a bit vague, so I'll fly over the answer. Essentially, create a 60 degree angle the ... | |
| Similarity - Radii | 3/24/2008 |
| Q: If the radius of a circle is made one-fifth as long as the original radius, what fraction of the ... A: This is a similarity problem which requires you to find the scale factor, k. k is equal to the new ... | |
| Triangles | 3/21/2008 |
| Q: i do not have an example to provide but my question was do you use the pythagorean theorum to find ... A: The Pythagorean Theorem only works for right triangles. However, it is a simplified form of the ... | |
| Tank Circumference | 3/20/2008 |
| Q: I am an oil field worker and college was too many years ago to recall. I would like to find a ... A: Hey Mark! You need to find the circumference of a cylinder. The formula for the situation here is ... | |
| Biconditional Statement | 3/20/2008 |
| Q: is a biconditional statement a statement that can be both true and false A: A statement that can be both true and false is of absolutely no use to you. A biconditional ... | |
| Dechlorinator | 3/19/2008 |
| Q: I bought an inexpensive dechlorinator for my aquariums. All it says on the back is: 1.207 grams ... A: Let's get a few things straight. Grams are a measure of mass; teaspoons are a measure of volume. ... | |
| Diagonal of a Rectangle | 3/18/2008 |
| Q: what is the best way to figure out the length of a diagonal line across a rectangle? can you give me ... A: I'm going to assume you are given both the length and width of the rectangle. (You need either both ... | |
| Depth of Lake Function | 3/13/2008 |
| Q: An artificial lake is 1.5m deep at the end of a dock.The lake gets 1.75m deeper every 10m from the ... A: Create a simple partial variation function in the form y=ax+b. Let y=the depth of the lake, a=the ... | |
| Sq. Footage in a Circle | 3/10/2008 |
| Q: If I have a circle 75.60 ft. across, how many square feet would the circle contain? A: The area of a circle is measured by multiplying pi by the square of the circle's radius. The ... | |
| Angle Construction | 3/10/2008 |
| Q: lesson plan for teaching construction of 60 and 90 degrees angles A: To construct a 90 degree angle, first draw a line. Next, put your compass on that line and draw a ... | |
| Golden Ratio | 3/9/2008 |
| Q: .. so would you mind send me some refrnces to go and find my question thanks,sanaz A: I remember my project on this stuff. Honestly, just Google "golden ratio application" or "uses of ... | |
| Area of Irregular Shapes | 3/9/2008 |
| Q: i have a question. How to find the area of a irregular pattern or shape? Please reply. A: What is an irregular pattern? If it's irregular, wouldn't it not be a pattern? You need to ... | |
| Diagonals of Kites | 3/9/2008 |
| Q: Im trying to find the longest diagonal of a kite, being given the lengths of the 2 sides and no ... A: This is actually a pretty awesome question once you figure out how to solve it. The longest ... | |
| Triangle Definition | 3/8/2008 |
| Q: 3.02] An equiangular triangle is defined as which of the following? A triangle containing three ... A: I know these are homework questions and you shouldn't be asking them and I shouldn't be answering ... | |
| Rectangle from Diagonal | 3/2/2008 |
| Q: Were to start, well the reason for this question is that I use autocad, I am trying to write a lisp ... A: By "creating the rectangle" are you referring to the mathematics, or the programming? The ... | |
| Rhombus' Angle Measures | 2/24/2008 |
| Q: A rhombus has diagonals of length 4 and 10. Find the measures of the angles of the rhombus to the ... A: Break this rhombus down into 4 right triangles about in which half the diagonals are legs. This ... | |
| Angle Addition Postulate With Variables | 2/23/2008 |
| Q: I know how to do angle addition postulates with numbers but I need some help when trying to figure ... A: Hey there Shelby! Find which angle is the biggest. Let's say that its <CBD in this case. This ... | |
| Surface area of Pyramids | 2/22/2008 |
| Q: Allright this may seem stupid but i just can;t seem to grasp the surface area concept...especially ... A: Don't worry. The area all the triangles in the pyramid is found to be sln/2. The slant height is ... | |
| Volume of a displaced sphere... | 2/20/2008 |
| Q: Not sure if this is geometry or not... Let's say you have a perfect sphere and drop it into water. ... A: This question requires you to compare surface area to volume. This means comparing two dimensions ... | |
| Octagon Help | 2/15/2008 |
| Q: I am currently working on wood working project a flower vase and I am hoping that you can help me. ... A: Each angle of your octagon will be 135 degrees. This is found by the formula int. < =((n-2)180)/n. ... | |
| Slopes | 2/13/2008 |
| Q: my son has a slope homework....Here is the description... The points given in each table lie on a ... A: Great attempt, but your explanation is not crystal-clear to me. I'll help you to the best of my ... | |
| Algebraic Equation | 2/6/2008 |
| Q: what is 16y=164 A: You must solve for "y" by isolating it. That means getting it alone. To do so, you must divide it ... | |
| Circle - Radius from Circumference | 1/30/2008 |
| Q: if a circle has a circumference of 8 how can I find the radius of the circle A: The circumference of a circle is calculated by c=2πr. Plug in 8 and solve for r. c=2πr ... | |
| Proofs - Parallelogram | 1/28/2008 |
| Q: write in a two column proof: Given: wx is parallel to zy; wz is parallel to xy Prove: angle w is ... A: Statements are on left, justifications are bracketed; "//" means "parallel." In quadrilateral WXYZ: ... | |
| Isosceles Triangle - Angle Bisections | 1/25/2008 |
| Q: Prove that the bisectors of the angles of base of an isosceles triangle intersect each other on its ... A: The bisectors of the base angles of an isosceles triangle intersect each other on ONE of its ... | |
| Apothems | 1/23/2008 |
| Q: How do you find the apothem of a regular polygon something like a hexagon? A: Hey Gary! The apothem is the distance from the centre to the middle of a line segment. This can be ... | |
| Geometry - Complement of an Angle | 1/21/2008 |
| Q: S.) and thanks in advance for your help. As a teacher, I'm filling in for low-level math and need a ... A: A system of equations will allow you to solve this. Firstly, let's designate "1 angle" as "x" and ... | |
| Pentagon Angles | 1/19/2008 |
| Q: i have a pentagon with 3 right angles. i am trying to figure out the degree of the other 2 angles. ... A: James, Please send me a diagram or clarify your question. I only have four side measurements, and ... | |
| Parallelogram - Definition | 1/14/2008 |
| Q: what is a parallelogram A: A parallelogram is a quadrilateral (four-sided polygon) whose opposite sides and angles are equal ... | |
| Analytical Geometry - Line Division | 1/13/2008 |
| Q: Given three points A(0,2) B(4,6) and C(3,0). P is a point on AB such that AP:PB= x:1 a) find the ... A: Hey Ginger! Given the level of complexity of this problem, I'll tell you how to do it now, and you ... | |
| Geometry - Proof | 1/12/2008 |
| Q: Prove that 2 angles that are supplemental to a third, are congruent to each other. And I'm not ... A: To be completely honest, I don't exactly understand the situation as you have described it. The "2 ... | |
| Square Meters Versus Square Feet | 1/9/2008 |
| Q: How many square feet are there in 100 square meter? A: Hey Jerry, There are approximately 3.28 feet in a metre. Because we are dealing with area, in 2 ... | |
| Trig Question | 1/4/2008 |
| Q: I barely remember my high school trig from 20 years ago. Finally, I need it for a project :) In a ... A: This is a tough one. The law of cosines is necessary to solve it, as well as a system of equations. ... | |
| Converting Square Centimetres to Square Feet | 12/30/2007 |
| Q: Please could you assite me, its been over 15year since i did my last conversion. I have created a ... A: A foot is equivalent to 30.48 centimetres. Therefore, you have to multiply 10 000 by 30.48 to give ... | |
| Tank Capacity | 12/27/2007 |
| Q: I found a 30" x 90" cylinder tank in my backyard. what is the fluid capacity. thanks ... A: Hey Anthony, The formula for finding the volume of a cylinder is 2πhr^2. I'll have to assume ... | |
| Locus - Fence | 12/16/2007 |
| Q: a map shows that a treasure is located 5 feet from a long straight fence, and also 8 feet from a ... A: I can't actually draw you a diagram here, but assuming the gate has SOME width, I can tell you how ... | |
| ASA Postulate | 12/12/2007 |
| Q: I have a rhombus with a transversal through it diagonally and the top and bottom lines have parallel ... A: Hey Janet, The ASA Postulate may be used. Rhombi, by definition, have 4 sides of equal measure. ... | |
| Duplicate Questions | 12/11/2007 |
| Q: I dont know how t study and learn how to do it. i need some study tips.. I'm having a hard time ... A: Trisha, Please don't send duplicate questions to experts. I'm going to assume this was an Internet ... | |
| Studying Geometry | 12/11/2007 |
| Q: I dont know how t study and learn how to do it. i need some study tips.. I'm having a hard time ... A: Take what you've learned in class and condense it into a few equations, formulae, theorems, and ... | |
| Geometry for an Accountant | 12/5/2007 |
| Q: Can you please tell me what kind of Geometry does an accountant use and do a problem how they use ... A: An accountant would use a logarithmic function to determine something exponential, such as an ... | |
| Rate of Water | 12/2/2007 |
| Q: water flows in a 400mm diameter drain to a depth of 120mm at a speed of 200mm/sec.calculate the rate ... A: I need to make several assumptions in order to interpret this question and answer it. This drain ... | |
| Locus and Equations of Lines | 11/30/2007 |
| Q: describe the locus of points equidistant from the points F(-2, 1) and G(6,3) and give the equation ... A: This is on a plane, right? First, figure out what the locus will look like. It will be a line ... | |
| Parallelograms - Planes | 11/29/2007 |
| Q: Why is it that when planes are drawn as diagrams that they are always drawn as parallelograms? ... A: Azza, I must say that my response will be no better than your teacher's. Furthermore, I also don't ... | |
| Parallelogram | 11/27/2007 |
| Q: State the principal defintion or theorem that enables you to deduce, from the information given, ... A: Something is wrong here. How does <SQR exist, and how is it congruent to <QPS? You meant <SRQ, ... | |
| Perimeter - Parallelogram | 11/26/2007 |
| Q: The perimeter of parrellelogram JKLM is 46cm, and JK is 1cm longer than JM. find JK and JM. A: Let (JM=x). This way, we know that (JK=x+1), right? To find the perimeter, we need to add all four ... | |
| Ellipse - Eccentricity of 1 | 11/25/2007 |
| Q: I am Mohammed Babaee, an Expert in Windows Mobile Devices at AllExperts. I have oneHow can we prove ... A: I would use logic to show this. If e=0, then the ellipse is really a circle, for both foci are ... | |
| Circle - Debate | 11/22/2007 |
| Q: I am in the midst of a geometry debate, I submit in my argument that a circle does not necessarily ... A: I totally agree with your perspective. Although a sphere has a radius, it is not based on a circle ... | |
| Algebraic Angles | 11/21/2007 |
| Q: I am having a hard time figuring out this question, I hope you can help me. :)In ABC, M<BAC=5x+8, ... A: Hey Elizabeth! You know that the sum of the interior angles in a triangle is 180 degrees. ... | |
| Analytical Geometry - Midpoint | 11/18/2007 |
| Q: I have having trouble on a few answers. Q1:Find the coordinates of the midpoint of a segment that ... A: Hey Emily! You're right for Q1, but you've made a tiny mistake. 5+(-3)=2, not -2. The midpoint's ... | |
| Analytical Geometry - Perpendicular | 11/17/2007 |
| Q: How do you find the y-intercept of a perpendicular line? I already know how to find the slope. For ... A: You need a point on this perpendicular line to find the y-intercept. You know the slope is the ... | |
| Lateral Area of a Rectangular Prism | 11/16/2007 |
| Q: Find the lateral area of a rectangular solid with length 10, width 6, and height 4? What is the ... A: l=10 w=6 h=4 la=lateral area By "rectangular solid," I take it you mean rectangular prism. The ... | |
| Rhombus' Diagonal | 11/12/2007 |
| Q: A rhombus has an angle of 120*, and its longer diagonal has a length of 12 centimeters. Find the ... A: Rhombus' diagonals intersect at a right angle. Knowing this, basic trig will guide you to the ... | |
| Triangles | 11/10/2007 |
| Q: sir, could you tell me how many triangles can be drawn by joining 7 non collinear points? ... A: Hey Akshaya! I've done this and I get 15 triangles. If duplicates and triplicates are included, ... | |
| Analytical Geometry - Isosceles Triangle | 11/9/2007 |
| Q: for the isoscles triangle with vertices A(-6,-1), B(5,5) and C(11,-6) determine the following 1. ... A: Hey Will, I'll tell you how to do this: 1. Graph the triangle. This can be done visually, but if ... | |
| Perpendicular Bisectors and Altitudes | 11/8/2007 |
| Q: I am having troubles solving some questions in regard to altitudes and perpendicular bisectors, I am ... A: Question 5 can be answered quite simply using the segment addition postulate. RX=RS+SX ... | |
| Geometry - Rhombus | 11/7/2007 |
| Q: I am a a hard time figuring out this problem, here's the problem: Find the value of x,y, and each ... A: Hey Lizzie! Let's begin with the angle measurements. One property of a rhombus is that its ... | |
| Reflection Upon a Line | 11/6/2007 |
| Q: Find the image of the points K(5,-2) and L(-10, 4) reflected in the line y=2/3x +6 Would I start ... A: Draw this out on graph paper to find the actual coordinates of the image points. From that, notice ... | |
| Substitution Postulate | 11/2/2007 |
| Q: i have a problem distinguishing segment addition postulate and the substitution postulate. the two ... A: Hey Nikko! The substitution postulate tells us that a quantity and its equal(s) are interchangeable ... | |
| Length of a Median | 10/30/2007 |
| Q: How to prove that in a triangle, length of the median to the smallest side is larger than the length ... A: Draw them both and measure them. At any rate, the median hitting the smallest side must be the ... | |
| Proofs - Circle | 10/30/2007 |
| Q: Hey, Ok. this is kind of long to start out with. Start by drawing a line segment g. From those ... A: Hey Elizabeth, The most logical way I see this is that the side measuring root h is a radius. This ... | |
| Analytical Geometry - Functional and Standard Forms | 10/28/2007 |
| Q: find an equation of the line passing through the given points. (a) write the equation in ... A: First, find the slope: a: a=ΔY/ΔX a=((-5)-(1))/((3)-(6)) a=-6/-3 a=2 Now for the ... | |
| Equivalent Ratios | 10/28/2007 |
| Q: ) I am a little confused about how to go about answering this problem... One of the numbers from ... A: Hey Janine, We need to find a common denominator. Alternatively, we could just figure out the ... | |
| Transformational Geometry for Real | 10/27/2007 |
| Q: need to illustrate one exampl eof each reflection, translation, rotation and glide reflection to a ... A: Shooting the puck around the boards behind the net would be a rotation. Shooting the puck off the ... | |
| Applications of Geometry | 10/27/2007 |
| Q: I would like to know the applications of geometry in real life ? Where all do we use geometry in ... A: Geometry is really all around us and has virtually infinite real life applications. Perhaps you ... | |
| Squares | 10/27/2007 |
| Q: Can you help me, I am having difficulty? If the perimeter of a square is 152 m. What is the area of ... A: Hey Janine! By definition, a square has four equal sides. To find the length of one side of a ... | |
| Third Angle Theorem | 10/26/2007 |
| Q: How do I prove the third angle theorum? A: Hey Carol! The sum of all the angle measures in a triangle (in 2-D at least) is 180 degrees. If ... | |
| Dividends - Multiples of 3 | 10/24/2007 |
| Q: why is a number that is divisble by a multiple of 3 also divisible by 3 A: This question almost answers itself if you think about it. 3 is a factor of many numbers. For this ... | |
| Circle Definitions | 10/23/2007 |
| Q: am i right or wrong here. the question is what is the radius of a 48 inch circle? is there enough ... A: Luke, Generally, when one names a circle by one-dimensional measurement, it is the diameter to ... | |
| Co-ordinate Geometry - Parallelogram | 10/22/2007 |
| Q: I need the answer of the following question. If possible reply with details. If the equations of ... A: The 4 equations you have given me are coincident: they are all the same line. There is no ... | |
| Locus | 10/22/2007 |
| Q: IN SPACE WHAT IS THE LOCUS OF POINTS EQUIDISTANT FROM THE VERTICES OF A SQUARE? A: Hey Sarah, I'd say it would be the summit of a pyramid whose base vertices are formed by those of ... | |
| Ratios as Percentages | 10/14/2007 |
| Q: I need your help! I can't figure out how to determine comparison ratios. Can you tell me (step by ... A: By definition percent means "for every one hundred." The symbol is thus a 1 with a 0 in either ... | |
| Point (x,y) in a Closed Figure | 10/9/2007 |
| Q: Given a closed figure, or irregular ploygon, defined by points (X1,Y1) ... (Xn,Yn) - (X1,Y1) How do ... A: I'm sorry to say, but I don't fully understand your question. I gather you mean given the points of ... | |
| Tessellation | 10/6/2007 |
| Q: what is a Tessellation A: Andrew, A tessellation is a collection of two-dimensional figures that fill a plane completely, ... | |
| Complements and Supplements | 10/6/2007 |
| Q: The question says, "Find the measures of a complement and a supplement of the andle." Then it has ... A: The complement of the angle equals (90-x) while the supplement equals (180-x), where (x) is the ... | |
| Area from Algebraic Perimeter | 10/6/2007 |
| Q: A rectangle has a perimeter of 200 and a width of x, what is the area. A: If the rectangle's perimeter is 200, then half its perimeter is 100. Half its perimeter equals the ... | |
| Impossible Triangle | 10/5/2007 |
| Q: I am building a roof over my front porch. To make a long question short, I have a triangle ... A: Hey Trevor, A triangle with those dimensions may not exist because the sum of the 2 shorter sides ... | |
| Similarity Transformations | 10/4/2007 |
| Q: A cross section of the leg of a dinosaur is a circle with a radius of 6 cm. What should the radius ... A: Logically, a dinosaur twice as tall would be much more voluminous. This is because (k=scale factor) ... | |
| Hexagon in a Circle | 10/3/2007 |
| Q: Im in calculus class and am having trouble answering this question finding the area of a regular ... A: Trigonometry and a formula you may or may not have learned make this problem decently quick to ... | |
| Balloon Volumes | 10/2/2007 |
| Q: How many regular balloons (6” diameter) will be needed to fill a large plastic bubble (5’5” ... A: Hey Carl, Given how I've been taught, I found each volume using (4/3)(pi)r^3. Nonetheless, I end ... | |
| Proofs | 10/2/2007 |
| Q: I just don't understand how 2 do it?? HELP!! Given:angle 6 is congruent to angle7 Prove: Angle5 is ... A: Tsunami, I hate to disappoint you, but I don't have the diagram as you do. I'm thus unable to ... | |
| Polyhedron - Cone | 10/2/2007 |
| Q: Is a circular cone a polyhedron? A: Cheyenne! What is a polyhedron? Basically, it's a 3-D figure which has faces made up of polygons. ... | |
| Triangle's Angles | 9/29/2007 |
| Q: in a triangle ABC,P is the point on BC such that it trisects BC. also Ap bisects angle BAC,bac=60. ... A: pnd, By drawing a scale diagram, angle APC is found to equal about 126 degrees. Seeing that even ... | |
| Proofs, Postulates, and Properties | 9/28/2007 |
| Q: I have this worksheet and do not get some problems. This what, this question in particular, says: ... A: The first two are undeniably given. Your teacher's answer key (or reasoning) is wrong. JK is ... | |
| Algebraic Equations | 9/27/2007 |
| Q: how do you do this, and what is the answer: 1/5(a+10)=-3 and t+6.5=3t-1.3 ??? A: In algebraic equations, moving anything across the equals sign changes its sign. REMEMBER THIS! ... | |
| Triangle's Angles | 9/27/2007 |
| Q: in a triangle ABC,P is the point on BC such that it trisects BC. also Ap bisects angle BAC,bac=60. ... A: I do not understand the problem as you have given it to me. "P is the point on BC such that it ... | |
| Algebraic Angles | 9/27/2007 |
| Q: please help on this problem: how would i solve: angle w is equal to angle z, where the measure of ... A: Hey Ashton, This question gives you an algebraic equation with the variable on both sides of the ... | |
| Segment Add. Postulate Again! | 9/26/2007 |
| Q: ..you went step by step which made it easy for me for AC=4/5CB and AB=27 Find CB but you came up ... A: I agree with you in that my method seems easier. From what I gather, I've done nothing wrong, other ... | |
| Segment Addition Postulate | 9/25/2007 |
| Q: I'm trying to help my daughter with her Geometry homework but I'm learning with her at the same time ... A: Firstly, the segment addtition postulate states that the sum of the parts equals the whole (I ... | |
| Algebraic Equation | 9/25/2007 |
| Q: how do I solve this equation? 6-5(2x-3)=4x+7 A: First, simplify each side of the equals sign as much as possible. On the left, multiply (2x) and ... | |
| Similarity - Areas | 9/25/2007 |
| Q: If two polygons are similar their perimeters will have the same ratio as their corresponding sides. ... A: Hey Courtney, The ratio of their areas will be the square of the ratio of their sides. Why? ... | |
| Word Problem - Clock | 9/24/2007 |
| Q: if we follow the hour and minute hands of a clock for 24 hours how many times will they form a right ... A: To be honest, a proper answer to this question depends on the mechanics of the clock. My reasoning ... | |
| Segment and Angle Addition Postulates | 9/23/2007 |
| Q: what is the difference between the segment addition postulate and the angle addition postulate? what ... A: Questioner Steven asked about the addition postulate before, so browse through my past answers for ... | |
| Geometry - Prism Volume | 9/22/2007 |
| Q: if a cube shaped box is 6 inches long and a rectangular box is 10 inches long 4 inches high and 4 ... A: First, find the volume of the cube. Vcube=s^3 Vcube=6^3 Vcube=216 Now, find the volume of the ... | |
| Geometry - Segment Addition Postulate | 9/20/2007 |
| Q: I have a test tomorrow over this stuff and its quite confusing. If you could first help me with a ... A: these are kinda tough. Firstly, the Segment Addition Postulate simply means that the sum of the ... | |
| Geometry - Midpoint | 9/20/2007 |
| Q: i have a question about segments on a sketch Here is aGiven one endpoint A, and midpoint M, find ... A: Don't worry about getting stumped on this question. Working backwards with the midpoint formula ... | |
| Special Parallelograms | 9/20/2007 |
| Q: which of these statements is not true about a parallelogram? A)opposite angles are congruent ... A: Hey Richard, A), B), and C) are definitely correct. I'm assuming by D) you mean consecutive ANGLES ... | |
| Algebraic Perimeter - Carpet | 9/20/2007 |
| Q: the perimeter of a rectangular carpet is 70 feet.he width is three-fourth the length. find the ... A: I'm honoured to be able to help you. The carpet's perimeter is 70 feet, with a width 3/4 the ... | |
| Volume | 9/19/2007 |
| Q: I have a 60 gallon tank, its 1'-6" wide and 2'-8" tall. I need to know how long to make the other ... A: Hey there, Mandy. To answer this question, I must surmise that you are referring to a U.S. liquid ... | |
| Geometry, complements | 9/18/2007 |
| Q: Three times the measure of an angle is twice that of its complement. What is the angle? A: it's a pleasure to help you. First things first, translate the problem from English into ... | |
| Geometry - Mandala Logos | 9/17/2007 |
| Q: IN Lesson0.5: What corporate disgns or logos are also mandala? A: Well, I'm don't have very much experience with mandala, but a few TV network logos are instances of ... | |
Azeem Hussain
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I can answer mostly any kind of question dealing with of Math 536 and below, my forte being in parabolic functions and analytical geometry.
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