The wheel of a scooter has a diameter of 70, | vedclass

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(C) The speed of the scooter is $66\, km/h$.To find the distance covered in one minute,convert the speed to $cm/min$:Distance per minute $= \frac{66 \

Vedclass · Accepted Answer

$500$

Vedclass · Answer

(C) The speed of the scooter is $66\, km/h$.To find the distance covered in one minute,convert the speed to $cm/min$:Distance per minute $= \frac{66 	imes 1000 	imes 100}{60} = 110000\, cm/min$.The distance covered in one revolution is equal to the circumference of the wheel:Circumference $= \pi 	imes d = \frac{22}{7} 	imes 70 = 220\, cm$.The number of revolutions per minute is the total distance covered in one minute divided by the distance covered in one revolution:Number of revolutions $= \frac{110000}{220} = 500$.

The wheel of a scooter has a diameter of $70\, cm$. How many revolutions per minute must the wheel make so that the speed of the scooter is kept at $66\, km/h$?

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