Q4 of 31 Page 178

A scooter wheel makes 100 revolutions in covering a distance of 88 m. Find the radius of the wheel.

Distance travelled by the wheel of the scooter = 88 m in 100 revolutions


Distance travelled in 1 revolution


Distance travelled in 1 revolution of a wheel = circumference of the wheel


We know that circumference of the circle = 2πr



⇒ r = 14 cm


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