SOLUTION: An automobile wheel 78 cm in diameter rotates at the rate of 600 revolutions per minute. What is the speed of the car in km/hr?

Question 558492: An automobile wheel 78 cm in diameter rotates at the rate of 600 revolutions per minute. What is the speed of the car in km/hr?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
An automobile wheel 78 cm in diameter rotates at the rate of 600 revolutions per minute. What is the speed of the car in km/hr?
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78 cm = 0.78 meters
Circumference = 0.78*pi m
600C = 600*0.78pi m/min = 468pi m/min = 0.468pi km/min
= 0.468pi*60 km/hr
= 28.08pi km/hr

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