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Question

A bicycle wheel has diameter 1m. If the bicycle travels one kilometer, then the number of revolutions the wheel make is.

A
1π
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B
100π
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C
500π
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D
1000π
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Solution

The correct option is D 1000π
Let the number of revolution of the wheel is n.
Since, Radius=12
Then,
n × Circumference of wheel = Distance travelled by bicycle
n×2π×12=1 km
n×π=1000 m
n=1000π m

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