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Find the number of revolutions taken …

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Find the number of revolutions taken by the wheel of a truck to cover a distance of 78.5KM if the diameter of the wheel is 1m.

Posted by Satyark Kumar 6 years, 1 month ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 1 month ago

diameter=1m
therefore radius=0.5m
circumference=2πr
=2×3.14×0.5
=3.14m
we know that 1km=1000m
therefore 78.5km=78500m
hence, no. of revolution=78500/3.14
=25000
hence, final answer is 25000 revolution.

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CBSE > Class 07 > Mathematics