Question

if the area of a square field is 400 metre square then find its perimeter

Answer 1

Area of square = 400 m^2

Side of square = sqrt 400

= 20 m


Perimeter = 4 × side

= 4 × 20

= 80 m

Answer 2

area of square  = side^2

400 =side^2

root400 =side

20metre =side

perimeter =4*side


here, perimeter =4*20

perimeter=80 metre