If a tire rotates at 400 revolutions per minute when the car is traveling 120km/h, what is the circumference of the tire?  Pick one:
A) 2 meters	B) 6 meters	C) 5 meters	D) 3 meters	E) 7 meters
400 rev / minute = 400 * 60 rev / 60 minutes   = 24,000 rev / hour   24,000 * 5 meters = 120,000 m : 5 meters is the circumference   5 meters = 5 meters   correct answer 5 meters
<result>C</result>
If a tire rotates at 400 revolutions per minute when the car is traveling 120km/h, what is the circumference of the tire?