The diameter of the wheel of a car is 77 cm . How many revolutions will it make to travel 121 km .
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Diameter of the wheel = 77 cm = 77 / 100000 Km = 0.00077 km.
So the circumference of the wheel = 2 x 22/7 x r = 22/7D = 22/7 x 0.00077 = 0.00242 Mts.
The distance travelled by the car = 121 Kms.
So the number of revolution the wheel will take to travel 121 Kms = 121 / Circumference of the wheel
= 121/0.00242 = 50000 nos.
Ans: 50000 Nos.
So the circumference of the wheel = 2 x 22/7 x r = 22/7D = 22/7 x 0.00077 = 0.00242 Mts.
The distance travelled by the car = 121 Kms.
So the number of revolution the wheel will take to travel 121 Kms = 121 / Circumference of the wheel
= 121/0.00242 = 50000 nos.
Ans: 50000 Nos.
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