If a tire rotates at 400 revolutions per minute when the car is traveling 96km/h, what is the circumference of the tire?
Choose the correct answer
A) 7 meters B) 9 meters C) 4 meters D) 5 meters E) 3 meters
400 rev / minute = 400 * 60 rev / 60 minutes   = 24,000 rev / hour   24,000 * 4 meters = 96,000 m : 4 meters is the circumference   4 meters = 4 meters   correct answer 4 meters
<result>C</result>
If a tire rotates at 400 revolutions per minute when the car is traveling 96km/h, what is the circumference of the tire?