Wednesday, April 17, 2013
Perimeter of a square
This is part 2 of our video series on finding the perimeter of plane shapes. Here is a formula sheet for finding the perimeter of plane shapes Perimeter formulas plane shapes
The formula for finding the perimeter of a square is four times one side or 4s
Problem 1 What is the perimeter of a square that has a side of 8 units?
Step 1. 4*8 =32 units
Problem 2 What is the perimeter of a square in which you only know the diagonal length of 10 units.
Step 1. Inside a square you have a 45-45-90 right triangle. Therefore you use the 45-45-90 rule to find the length of one side.