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Trigonometry

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Moderate

Angular Speed: Motocross

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The diameter of the front wheel of a motocross​ bike is 21 inches.

If you are racing the dirt bike at 32 miles per hour, how many revolutions per minute is the wheel turning?

A

512.21 rev / min

B

30,732.36 rev / min

C

42.68 rev / min

D

3218.29 rev / min