To calculate the perimeter of a shape, like this window, you can add the length of all the sides together. 100cm + 120cm + 100cm +120cm = 440cm Or, you can multiply the length and width by 2.

I had a bit of a problem. I needed to fit my entire body through a hole in a standard piece of printer paper. While this isn't a real problem, it is a fun way to show how the perimeter and area of ...

Recap. Perimeter is the distance around the outside of a shape.. Area measures the space inside a shape. We measure area in meters squared which is written as m2. Example: Perimeter: Add all the ...