A sector of 120 degrees, cut out from a circle, has an area of 66/7 sq cm. Find the radius of the circle.

A sector of 120 degrees, cut out from a circle, has an area of 66/7 sq cm. Find the radius of the circle.

A 1cm

B 2cm

C 3cm

D 4cm

Solution

Correct Answer: Option C

\(\mathrm{πr}=\frac{66}7\)

r =3