Question 555259
If the minute hand of a big clock is 1.2 cm long, how far does the tip of the minute hands move in 20 minutes?
Since circumference of a circle made by the tip of the minute hand is:
2(pi)r
2(3.14)1.2
7.536 cm
.
if it travels 20 minutes, that is:
20/60 of the circle
or 
1/3 of circle
.
Distance travel is then:
(1/3)(7.536) = 2.512 cm