Question

an Express train is running between two station with a uniform speed if the diameter of each wheel of train is 42 cm and each wheel makes 1200 Revolution per minute find the speed of the train​

Answer 1

Answer:

158400cms/minute

Step-by-step explanation:

diameter=42

radius=21

circumference =2*pi*r

c=132

So per minute

circumference*revolution=distance covered

So

132*1200=158400cms/minute