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OpenStudy (anonymous):
A car with a tire of radius 16 inches is rotating at 450 rev. per minute. Find the speed of the car to the nearest kilometers per hour.
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OpenStudy (anonymous):
find the circumference multiply the circumference with the # revolutions per min and that will give you the speed in inches/min
OpenStudy (anonymous):
And then?
OpenStudy (anonymous):
convert inches/min to km/hr...
OpenStudy (anonymous):
Aaaah. Thanks :D
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