Find the arc length on a circle with radius of 13 feet created by an angle of 4pi/3 radians

Question

52pi/3, 52pi, 13pi, 13pi/3, none of the above

options

Answer 1

With the angle in radians, the arc length is

s = rθ

r = 13 ft

θ = 4π/3 radians

Plug in the numbers and get s in feet.