Question

In the circle below, segment AB is a diameter. If the length of are ACB is 6pi what is the length of the radius of the circle?

Answer 1

The radius is 6

Explanation:

Arc length ACB = 6 pi

The arc length = fraction of a circle times the circumference

6 pi = 180/360 * 2 * pi *r

6 pi = 1/2 * 2 * pi*r

6 pi = pi r

The radius is 6