Question

The area of a square is 100cm². What is its perimeter?

Answer 1

Explanation:

well, if the area is 100cm^2

then its side must be 10cm

why?, because the area of square is s*s

so if s=10

then s*s = 10*10 which is 100

so, how many sides does square have? 4

so 4 times 10 = 40

and done!