Question

find how many times a wheel of diameter 35 cm must rotate to go 11 m​

Answer 1

Answer:

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How many times a wheel of radius 28cm must rotate to go 352 m?(Take π=722)

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Let wheel must be rotate n times of its circumference.

Radius of wheel=28cm and Total distance=352m=35200cm

∴ Distance covered by wheel=n×circumference of wheel

⇒35200=n×2πr

⇒35200=n×2×722×28

⇒n=2×22×2835200×7

⇒n=200 revolutions.

Thus, wheel must rotate 200 times to go 352 m.