Wind energy is one of the most fastest-growing segments of the energy production industry in the United States. A manufacturer makes several sizes of wind turbines. Wind turbine blades are mounted on a tower that is made of three sections of the tower is modeled by a cylinder with diameter of 15 feet. The table gives information about wind turbines.

For model 5, the tip of the blade travels 0.18 miles per revolution. What is the approximate speed, in revolutions per minute, for model 5?
POSSIBLE ANSWERS

A) 19
B) 25
C) 36
D) 52