The diameter of a wheel is 1m. The number of revolution it will to make to travel a distance of 23 km will be
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distance travelled by wheel in one rotation is circumference of the wheel
circumference of the given wheel=π×D=3.14×1=3.14mtrs
so the wheel covers 3.14 kms in 1 revolution
so 1 km in 1/3.14 revolution
so 23 km in (1/3.14)×23=7.325 revolution
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