Perimeter of rectangles
key notes:
The perimeter of a shape is the distance around the shape. It is the total length of the shape’s sides.
Learn with an example
➡️ What is the perimeter of the rectangle?
_____ centimetres
To find the perimeter, find the total length of the shape’s sides.
Add all of the side lengths.
6+3+6+3=18
The perimeter of the rectangle is 18 centimetres . (Centimetres can be written “cm”.)
➡️ What is the perimeter of the rectangle?
_____ centimetres
To find the perimeter, find the total length of the shape’s sides.
Add all of the side lengths.
3+5+3+5=16
The perimeter of the rectangle is 16 centimetres. (Centimetres can be written “cm”.)
➡️ What is the perimeter of the rectangle?
____ metres
To find the perimeter, find the total length of the shape’s sides.
Add all of the side lengths.
4+8+4+8=24
The perimeter of the rectangle is 24 metres. (Metres can be written “m”.)
let’s practice!
