Question

Find the radius and perimeter of a circle
whose area is 12.32m2.

Answer 1

let radius of the circle is r m

area of the circle is πr^2=12.32

=> r^2=12.32/π=12.32×7/22=3.92

=> r=√3.92=.198

so,radius =.198 m

perimeter=2πr

=2×22×.198/7

=1.24 m