Perimeter with Grids

Perimeter - How it Works - Video

Example 1

Example 1:

We need to find the perimeter of the figure. We first count how many squares are on each side of the rectangle. If we start counting on the top and continue to the right, on the stop, we have 2 squares, 3 squares, 2 squares, then 3 squares. As each square is 1 cm long, our units for each side length is cm. Now we add each length to find the perimeter of the figure. So the final result is 2 + 3 + 2 + 3 = 10 cm.

Example 2

Example 2:

We need to find the perimeter of the figure. We first count how many squares are on each side of the rectangle. If we start counting on the top and continue to the right, on the stop, we have 3 squares, 2 squares, 3 squares, then 2 squares. As each square is 1 cm long, our units for each side length is cm. Now we add each length to find the perimeter of the figure. So the final result is 3 + 2 + 3 + 2 = 10 cm.

Example 2 is the same as Example 1 even though the image is a little bit different. Figures can have the same perimeter even if the figures look different.

Example 3

Example 3:

We need to find the perimeter of the figure. We first count how many squares are on each side of the rectangle. If we start counting on the top and continue to the right, on the stop, we have 5 squares, 2 squares, 5 squares, then 2 squares. As each square is 1 cm long, our units for each side length is cm. Now we add each length to find the perimeter of the figure. So the final result is 5 + 2 + 5 + 2 = 14 cm.

Example 4

Example 4:

We need to find the perimeter of the figure. We first count how many squares are on each side of the rectangle. If we start counting on the top and continue to the right, on the stop, we have 4 squares, 4 squares, 4 squares, then 4 squares. As each square is 1 cm long, our units for each side length is cm. Now we add each length to find the perimeter of the figure. So the final result is 4 + 4 + 4 + 4 = 10 cm.

Live Worksheet

Teacher - Edpuzzle Link