Question

perimeter of a square is 80m what is its area? a) 400m b) 160m c) 6400m d)1600m

Answer 1

Perimeter = 4*side
80 = 4 * side
side = 20 m

Area = side * side
Area = 20*20 = 400 m^2

Area = a) 400 m^2.

hope this helps....

Answer 2

perimeter = 80

perimeter of square = 4*s

according to sum

4 *S = 80

S = 80/4

s = 20

area of square = s*s

20*20= 400

so option (a) is correct

thanks