If a tire rotates at 400 revolutions per minute when the car is traveling 24km/h, what is the circumference of the tire?
Pick:
A) 1 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 * C = 24,000 m : C is the circumference   C = 1 meters   correct answer 1 meters
<result>A</result>
If a tire rotates at 400 revolutions per minute when the car is traveling 24km/h, what is the circumference of the tire?