Question

Area of a square is 441 cm² . Find its perimeter.

Answer 1

Area of square = 441
 Side x side = 441
Side = 21 cm
Perimeter = 4 x side
                 = 4 x 21
                = 84 cm

Answer 2

Heya Friend,
Here is the answer.

☆ Area of square = a^2
Area given here = 441 cm^2
☆a^2 = 441 cm^2
a= root 441
= 21 cm

☆ Perimeter of square = 4a
= 4×21 = 84cm

Hope it helps..