The minute hand of a clock is 4 inches long How far does the

The minute hand of a clock is 4 inches long. How far does the tip of the minute hand move in 25 minutes?

Solution

Calculate the perimeter of clock corresponding to minute hand.

P=2r

=2*4

=25.13 in

Calculate distance travel tip of minute hand in 25 min.

D=p*25/60

=25.13*25/60

=10.47 in