Question

find a Rea of the circle whose circumference is 132 CM

Answer 1

Given 2pir = 132

           2 * 22/7 * r = 132

             r = 21

Area = pi * r * r = 22/7 * 21 * 21 

                         = 1386 sq.cm.

Hope this helps!

Answer 2

Let the radius of the circle = r cm

Circumference ( C ) = 132

2πr = 132

r = 132/ 2π cm

Area of the circle = πr²

A = π × ( 132/2π)²

= ( 132 × 132 ) / 4π

= ( 132 × 132 × 7 ) / ( 4 × 22 )

= 3 × 66 × 7

= 21 × 66

=1386cm²

I hope this helps you.

:)