Question

find the area of a square if its perimeter is 36cm​

Answer 1

perimeter = 36

so if each side is 'a'

4a = 36

a = 9

area =

$a {}^{2}$

so area is 9x9 = 81sq. cm

Answer 2

Step-by-step explanation:

area of square = side × side

perimeter of square = 4 × side = 36

= side = 36 / 4 = 9

so area is = 9 × 9 = 81 cm