how many times does a wheel radius 42 cm rotate to cover 396 m
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Answered by
2
Answer:
it my be many time's for the wheel
Answered by
17
Answer:
Hi !
Concept :- The distance covered by a wheel in one rotation is equal to its CIRCUMFERENCE!
So here, if the radius (R) = 42cm, the circumference (C) => 2πR = 2 x (22/7) x 48 = 264 cm.
The required distance (D) is 396 m = 396 x 100 cm [1m = 100cm].
Thus, the number of times the wheel must rotate
= Total Distance/Circumference
= D/C = 396 x 100/264 = 150.
Hope this helps ! :)
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