Question

what will be the perimeter of a square if its area is 400 cm​

Answer 1

Answer:

P = 80cm

Step-by-step explanation:

Area of square = l x l

$400 = {l}^{2}$

${20}^{2} = {l}^{2}$

$l = 20$

$perimeter = 4 \times l$

$p \: = 4 \times 20$

$p = 80cm$