Q. 164.3( 140 Votes )
How many times a wheel of radius 28 cm must rotate to go 352 m?
It is given in the question that,
Total distance to be covered by wheel = 352 m
= 35200 cm
Radius of wheel = 28 cm
Circumference of the circle = 2Πr
= 2 × × 28
= 2 × 22 × 4
= 176 cm
When a wheel rotates completely it covers a certain distance.
Hence it can be used to find the distance covered by a vehicle.
Also, a wheel will take certain rounds to cover some distance.
Total distance covered by wheel = Number of rotations × circumference of wheel
Number of rotations =
∴ The wheel will rotate 200 times.
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