A boy is cycling such that the wheels of the cycle are making 140 revolutions per hour. If the diameter of the wheel is 60cm then calculate the speed (in km/h) with which the boy is cycling.

A boy is cycling such that the wheels of the cycle are making 140 revo

1.	A boy is cycling such that the wheels of the cycle are making 140 revolutions per hour. If the diameter of the wheel is 60cm then calculate the speed (in km/h) with which the boy is cycling.
Answer» A boy is cycling such that the wheels of the cycle are making $140$ revolutions per hour. If the diameter of the wheel is $60 c m$ then calculate the speed (in $k m / h$ ) with which the boy is cycling.