The angle subtended by an arc of a circle at the center is 60 degrees. What is the ratio of the length of the arc to the radius of the circle?
A. $\dfrac{\pi}{3}$
B. $\dfrac{2\pi}{3}$
C. $\dfrac{3\pi}{3}$
D. $\dfrac{4\pi}{3}$
Answer:A
The angle subtended by an arc of a circle at the center is 60 degrees. What is the ratio of the length of the arc to the radius of the circle?
A. $\dfrac{\pi}{3}$ B. $\dfrac{2\pi}{3}$ C. $\dfrac{3\pi}{3}$ D. $\dfrac{4\pi}{3}$