Question

A wire is in the form of square encloses an area of 169 sq cm, if the same wire is rebent in the form of circle. Find the area enclosed by circle.

Answer 1

Answer:

as shape will change but perimeter will remain same

let side of square be x

x²=169

x=13

perimeter=4×13=52

let radius of circle be r

perimeter of circle =2×3.14×r=52

r=8.3 cm

area =3.14×8.3×8.3=216 cm²