Solve the Problem $5 \mathrm {~cm}$ Rotates 19 Times In $64 \mathrm { sec }$

Multiple Choice

Solve the problem.
-A pulley of radius $5 \mathrm {~cm}$ rotates 19 times in $64 \mathrm { sec }$ . Find the angular speed of the pulley.

A) $\frac { 32 \pi } { 95 }$ radian per sec
B) $\frac { 95 \pi } { 32 }$ radians per sec
C) $\frac { 95 \pi } { 64 }$ radians per sec
D) $\frac { 64 \pi } { 95 }$ radian per sec