Question

the wheel of a railway carriage is 4ft in diameter and makes 6 revolutions in a second; how fast is the train moving?​

Answer 1

Answer:

24π feet/sec

Step-by-step explanation:

Diameter of the wheel =4 feet

∴ Radius of the wheel =2 feet

Circumference of the wheel =2πr

⇒2π×20

⇒40π

Number of revolutions made in 1 second = 6

Distance covered in 1 sec=6*4πf eet

=24 π feet

Speed of train=24π feet/sec

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Answer 2

Answer:

Answer:

24π feet/sec

Step-by-step explanation:

Diameter of the wheel =4 feet

∴ Radius of the wheel =2 feet

Circumference of the wheel =2πr

⇒2π×20

⇒40π

Number of revolutions made in 1 second = 6

Distance covered in 1 sec=6*4πf eet

=24 π feet

Speed of train=24π feet/sec

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Step-by-step explanation: