I do not know the answer to this

Question

An artist is creating a large butterfly sculpture outside a museum. There is a circular dot on each wing made out of a metal ring. The distance around each dot is 24π inches . The artist plans to fill the inside of each dot with blue colored glass. What is the area of the blue glass will be needed to fill each butterfly dot?

Answer 1

The radius of the circle is r where 2πr=24π, r=12.

The area of a circle with radius 12 is 144π.