A Small FM Radio station has a signal that can be heard anywhere within a 40 mile Radius. What is the Approximate circumference of the stations Broadcast?
F. 60 miles G. 120 miles H. 200 Miles J. 240 Miles.

Question

A Small FM Radio station has a signal that can be heard anywhere within a 40 mile Radius. What is the Approximate circumference of the stations Broadcast? 
F. 60 miles G. 120 miles H. 200 Miles J. 240 Miles.

aveline · Answer

To find the circumference of a circle, multiple the diameter of the circle by π.
The radius is 40 miles, double the radius to find the diameter.
So, 80π is your answer
Technically, the answer would simplify to 250, but the answer is probably J., 240 miles, assuming that you are using 3 as pi.