The minute hand of a clock is 5 inches long and moves from 12 to 7 o'clock . How far does the tip of the minute hand move? Express your answer in terms of p

Question

Choices are ;

 

18.3 inches

 

10.5 inches

 

13.2 inches

3.7 inches

Answer 1

The total circumference will be 2*pi*R

But the angle covered is only 7/12 of the total circumference so:

L= (7/12)*pi*2*R = 18.325 inches

The answer is the first.