if the diameter of a wheel is 84 cm then the distance travelled by it in 10 complete revolutions is approximately in metres
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Answer:
Let r be the radius of the wheel. Then,
Diameter = 84 cm
2r=84
r=42 cm
Circumference of the wheel = 2πr=264cm=2.64m
So, the wheel covers 2.64 meters in one complete revolution.
Total number of revolutions in covering 792 meters =
2.64
792
=300.
Hence, the wheel takes 300 revolutions in covering 792 meters.
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