Each wheel of a car is of diameter 80 cm.How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour?

Question

Each wheel of a car is of diameter 80 cm.How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour?

Filo · Accepted Answer

Given, speed of the car is 66km/hrTherefore,    Distance travelled by the car in 1hr=66km/hr    Distance travelled by the car in 10mins=6066​×10km=11km=11×1000m=11×1000×100cmDiameter of car wheel 80cmTherefore,radius of car wheel=2diameter​                              =280​cm                              =40cmTherefore,Circumference of car wheel=2πr                                            =2×722​×40                                            =71760​cmTherefore,Number of revolution made by the wheels in 10 minutes==distance  travelled  by  the  car  when  its   wheel completes  one  revolutiondistance  covered  by  the  car  in  10 minutes​=71760​ 11×1000×100cm​= 1760 77×1000×100cm​=4375 revolutions.

Question Text	Each wheel of a car is of diameter $80 c m$ .How many complete revolutions does each wheel make in $10$ minutes when the car is travelling at a speed of $66 km p er$ hour?
Answer Type	Text solution:1
Upvotes	151

Each wheel of a car is of diameter $80 c m$ .How many complete revolutions does each wheel make in $10$ minutes when the car is travelling at a speed of $66 km p er$ hour?

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