S = r theta Where s = arc length R = radius Theta = angle measure in radians. If AB is the radius S = 12* 60(pi/180) S = 12 * pi/3 S = 4pi ft S = 12.56 ft If AB is the diameter S = 6 * 60(pi/180) S = 6 * pi/3 S = 2pi ft S = 6.28 ft
The (pi/180) is the conversion factor from degrees to radians.
