[" 20.If the wheel of a bus with "50cm" radius makes "280" revolutions per minute,find the speed of the bus "],[" in kmh."]

If the wheel of a bus with 50 cm radius makes 280 revolutions per minute, find the speed of the bus in km/h

If the wheel of a bus with 50 cm radius makes 280 revolutions per minute, find the speed of the bus in km/h

An express train is running between two stations with a uniform speed. If the diameter of each wheel of the train is 42 cm and each wheel makes 1200 revolutions per minutes, find the speed of the train.

A circular wheel if radius 28 cm makes 300 revolutions per minute. Find the speed of the wheel in kilometre per hour.

An express train is running between two stations with a uniform speed. If the diameter of each wheel at the train is 42 cm and each wheel makes 1200 revolutions per minute, Find the speed of the train.

When a cyclist rides a cycle the wheel of the cycle having radius 77 cm makes 500 revolutions in 5 minutes .Find the speed of the cycle in km per hour . (Take pi=(22)/(7))

The driving wheel of a locomative engine is 2.1 m in radius and it makes 75 revolutions per minute. Find the speed of the train in kmph.

A wheel of radius 2.1 m of a vehicle makes 75 revolutions in one minute. What is the speed of the vehicle ?

The wheels of the locomotive of a train are 2.1 m in radius. They make 75 revolutions in one minute. Find the speed of the train in km per hour.

The diameter of a wheel of a bus is 90 c m which makes 315 revolutions per minute. Determine its speed in kilometres per hour. (T a k e\ pi=(22)/7)