KS2 Primary Maths Age 9-13 - Area and Perimeter: - Explained

The video tutorial explains how to find the perimeter of a square given its area. It starts by identifying the area of the square as 25 cm² and then calculates the side length by determining what number multiplied by itself equals 25, which is 5. With the side length known, the perimeter is calculated by multiplying the side length by 4, resulting in 20 cm. The tutorial also mentions the allocation of marks for finding the side length and the final answer.

If the area of a square is 25 cm², what is the length of one side?

Calculate the perimeter of a square with side length 5 cm.