The wheel of a car of diameter 80 cm

Asked by admin @ 17/08/2021 in Math viewed by 297 People

The wheels of a car are of diameter 80cm each. how many complete revolution does each wheel make it in 10 minutes when the car is traveling at a speed of 66 km/hr

Answered by admin @ 17/08/2021

First, Convert 66 kmph into m/s i.e 66*1000/3600 = 66*5/18= 55/3 m/s.
Now, Distance covered in 10 min = (55/3*10*60)m = 11,000 m.
Circumference of wheel= (22/7*80/100 )m , which is distance covered in one Revolution.
No. of complete Revolution = 11000/(22/7*80/100 ) = 4,375.

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