Find the Length of an Arc Intercepted by a Central $\theta$

Multiple Choice

Find the length of an arc intercepted by a central angle $\theta$ in a circle of radius r. Round your answer to 1 decimal place.
- $$\mathrm { r } = 57.84 \text { in.; } \theta = 60 ^ { \circ }$$

A) $30.3 \mathrm { in }$ .
B) $60.6 \mathrm { in }$ .
C) $121.1 \mathrm { in }$ .
D) $19.3 \mathrm { in }$ .