the wheels of a car are of diameter 80cm how many complete revolutions does each wheel make in 10 min when car is travelling at speed of 66km/h?
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First of all change 10 min in he's it will be 10/60=1/6
Then
D=s×t
D=11km
Change r into m
R=40/100
Then find circumference
2πr
No of revolutions=total dist. travelled/circumference
=11km=11000m
11000/88/35
And will be 4375 rounds
pecky:
10 min in hours
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