Q16 of 43 Page 223

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


Radius of wheel = 28 cm


Circumference of the circle = 2r


= 2 × × 28


= 2 × 22 × 4


= 176 cm


Hence,


Number of rotations =




= 200


∴ The wheel will rotate 200 times

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