Question

Minute hand of a table clock is 5 cm long,how far does it move in 20 mins?

Answer 1

Answer:

If the minute hand moved full circle (1 hour), it would have gone 2π•6 in. But it only goes for 20 minutes, which is 1/3 of an hour. So, the distance is (12π)/3 inches, or 4π inches. That's approximately 12.566 inches.