You are here:

- Home
- Science
- Math for Kids
- Geometry
- Perimeters and Areas

Advertisement

(1)what is the perimeter of a square field whose area is 14400cm^2

(2)the perimeter of a rectangle is 24cm. if one side is 4cm. find the area of the rectangle.

please sir, help me solve the question above!

Hi Johnny,

(1) A square with side length x has area x² and perimeter 4x. Using the given area, you can solve for x.

x²=14400

√(x²)=√14400

x=120

Now multiply by 4 to get the perimeter of the square.

(2) A rectangle with side lengths x and y has perimeter p=2x+2y and area xy. You are given the perimeter and one side length (say, y), so you can solve for the other.

2x+2y=p

2x+2(4)=24

x+4=12

x=8

Now you know the side lengths are 8 and 4, so you can multiply those to get the area of the rectangle.

Thanks for asking,

Azeem

I welcome your questions on algebra, 2D and 3D geometry, parabolic functions and conic sections, and any other mathematical queries you may have.

4 years as a drop-in and by-appointment tutor at Champlain College.
Private tutor for dozens of clients over the past 8 years.**Publications**

CALPHAD: Computer Coupling of Phase Diagrams and Thermochemistry**Education/Credentials**

Bachelor of Science, Major Mathematics and Major Economics, McGill University, 2014.
Diploma of Collegiate Studies; Pure and Applied Science, Champlain College Saint-Lambert, 2010.