_{a wheel has a diameter of 28 cm.find the distance covered by the wheel in 20 revolutions.}

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Solution

Diameter = 28 cm
Circumference = 2πr=π(2r)=πd=22/7×28
=88 cm
Distance covered in 20 revolutions = 20 × circumference of circle = 88×20 cm = 1760cm

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