Question

the minute hand of a circular clock is 15 cm. How far does tip of the minute hand move in 1 hr ?

Answer 1

The distance covered by tip of minute hand is equal to the Circumference of circle formed by the rotating of the minute hand..

Required distance = 2* pi *r

= 2* 3.14 * 15

= 30 * 3.14

= 3*31.4

= 94.2 cm