A hamster runs at a speed of 12 centimeters per second in a wheel of radius 12 centimeters.
How fast will the wheel spin in revolutions per minute?
12cm/ s * 60 s = 720 cm = distance traveled by the wheel in one minute
Circumference of the wheel = 2pi (12) = 24 pi cm
Revs per minute = 720 / [24 pi ] = 30 / pi ≈ 9.54 revs/ minute