Question

A circle of area 314 cm square is inscribed in a square . What is the perimeter of the square?

Answer 1

pi r2= 314

Find r.

then, find diameter I.e. 2r

as diameter of a inscribed circle is the length of side of square,

perimeter of square is 4* diameter of circle.

hope it helps.

Answer 2

r2(radius*radius)
pir*r2=area
3.14*r2=314
r2=314/314*100
r2=100
therefore r=10cm

side of square=diameter of circle
diameter=2r
thrfore...perimeter=4*side
=4*10=40cm