Question

The perimeter of a circular field and a square field is equal. If the side of a square shape field is 22 m, what is the area of a circular field ?

Answer 1

let the radius of circular field is r and side of square field is a.
perimeter of square field = perimeter of circular field
4a = 2*π*r
4*22 = 2*22*r/7
r = 2*7 = 14 m
area of circular field = πr²
                             = 22*14²/7
                             = 22*14*2
                             = 616 m²

Answer 2

☘⫷❥ᴀ᭄n §₩ΣR⫸☘

Let the radius of the circular field is r and side of the square field is a.

perimeter of square field= perimeter of circular field

4a= 2πr

4×22=2×22×r/7

r=2×7= 14cm

The area of a circular field= πr²

=22×14²/7

=22×14×2

=616m²