A wheel has diameter 84 cm. Find how many complete revolutions must it take to cover 792 meters

Let r be the radius of the wheel

Given

Diameter = 84 cm

2r = 84

r = 84/2

r = 42 cm

Circumference of the wheel = 2πr

= 264 cm

= 2.64 m

Hence, the wheel covers 2.64 meters in one complete revolution

Total number of revolutions in covering 792 meters = 792/2.64

= 300

Therefore, the wheel takes 300 revolutions to cover 792 meters

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