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About Chanda Walker
Expertise
I can answer word problems involving mathematics at the high school and college level. I particularly enjoy calculus word problems. Please don't just type the math problem without comments. If you don't tell me what problem your having, I can't help.

Experience
Have done word problems as a tutor and as a student of mathematics and physics for years.

Organizations
Sigma Xi

Education/Credentials
Optical Science PhD

Past/Present Clients
I've answered hundreds of questions here at AllExperts.com in algebra, physics and general math sections.

 
   

You are here:  Experts > Science > Math for Kids > Word Problems > CONFUSED NEED HELP

Word Problems - CONFUSED NEED HELP


Expert: Chanda Walker - 3/28/2009

Question
Students walking to class cut the corner across the parking lot.  Going the long way meant walking 30 feet north and then 50 feet west.  How many fee did they save themselves by cutting across the corner.

I don't even know where to begin..

Answer
You need to use the Pythagorean theorem.  It says that if you have a right triangle, you can calculate the hypotenuse from the lengths of the other two sides.
Here is the theorem:
a^2 + b^2 = c^2
where a and b are the lengths of the two sides and c is the hypotenuse of a right triangle.

a = 30
b = 50
900 + 2500 = 3400

c = Sqrt(3400)
c = 10Sqrt(34) = 58.3 ft

Let me know if I can help further.

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