If a tire rotates at 400 revolutions per minute when the car is traveling 72km/h, what is the circumference of the tire?
Answer 3 meters
Start by determining the number of revolutions in an hour: 400 rev / minute = 400 × 60 rev / 60 minutes = 24,000 rev / hour. Now take that number, 24,000, and find for C, the circumference: 24,000 × C = 72,000 m, where C = 3 meters.
Asked by Tom Tennant · Last updated 5 years ago · 1.5K views · SOURCE
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