How many revolutions does the wheel make to travel 2 km?

Question

The diameter of a bicycle wheel is 2 ft.

Answer 1

2 ft = (2 ft)(0.3048 m / 1 ft)(1 km / 1000 m)

 

      = 0.0006096 km

 

Each revolution, the wheel travels a distance equal to the wheel's circumference.

 

circumference = π(diameter) = 0.006096π km

 

(1 rev / 0.006096π km)(2 km) = 1044.3 revolutions