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A bicycle wheel have a diameter of 35cm.How many revolutions will the wheel make to cover 440m.

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1 Answer

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Let the radius of the wheel is r cm.

Given that the diameter of the wheel is 2r = 35 cm.

⇒ The radius of the wheel is r = 17.5 cm.

Total distance cover by wheel in a single revolution is the circumference of the wheel = 2πr 

= 2 x  22/7 x 17.5 

= 2 x 22 x 2.5 

= 110 cm

Let n revolutions are required to cover the distance 440 m = 44000 cm 

∴ n × 110 = 44000 

⇒ n = 44000/110 = 400

Hence, 400 revolutions of wheels are required to cover the distance 440m.

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