[" 40.The whoel of the engine of a train "4(2)/(7)m" in circumference makes "7" revolutions in "3],[" Find the speed of the train in km per hour."]

If the wheel of the engine of a train 4(2)/(7) metres in circumference makes 7 revolutions in 4 seconds,then the speed ( in km/hr) of the train is (a) 27 (b) 28 (c) 29 (d) 30

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 wheel of an engine of 300 cm in circumference makes 10 revolutions in 6 seconds. What is the speed of the wheel (in km/h)?

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.

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

A train 760 m long crosses a platform 440 m long in 40 seconds Find the speed of the train in km per hour .

A train 150 m long crosses a tree in 6 seconds .What is the speed of the train in km per hour?

A train 180 m long crosses a standing man in 12 seconds . Find the speed of the train in km per hour .