Question

If the arc on a particular circle has an arc length of 3 feet, and the angle measure of the arc is 60°, what is the circumference of the circle?

Answer 1

Would you agree that if the arc is 60 degrees that is 1/6 of the entire circle? So perhaps, is you know 1/6 of the circle, you can find 6/6 of the circle.

Answer 2

use l=r*theta
l=arc length
r=radius
3=r*pi/3
r=9/pi
circumference=2pi*r
=2*pi*9/pi
=18