Joelle760 Joelle760

22-07-2014
Mathematics

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How many revolution will a car wheel of diameter 30in make as the car travels a distance of one mile.

Respuesta :

22-07-2014

Circumference = (pi) x (diameter) = 30 pi inches.

1 foot = 12 inches
1 mile = 5,280 feet = 63,360 inches

Number of revolutions in 1 mile = (63,360) / (30 pi) = 672.27... revs (rounded)

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