Solve the Problem
-The Radius of the Tires of a Car

Multiple Choice

Solve the problem
-The radius of the tires of a car is 20 inches, and they are revolving at the rate of 726 revolutions per minute. How fast is the car traveling in miles per hour?

A) $\frac { 55 } { 4 } \pi \mathrm { mph }$
B) $\frac { 11 } { 4 } \pi \mathrm { mph }$
C) $330 \pi \mathrm { mph }$
D) $\frac { 55 } { 2 } \pi \mathrm { mph }$