An arc of a circle with a diameter of 8 inches has a length of 3π. What is the measure of the corresponding central angle in radians?

Question

A- π/4

B- π/2

C- 3π/4

D- π

Answer 1

S = rθ when θ is in radian measure and in this case, it is. So if S = rθ then θ = S/r = 3π/(8/2) = 3π/4