SOLUTION: the hour hand of a clock is 3m long. How far does it move in 20 minutes?

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Question 1057179: the hour hand of a clock is 3m long. How far does it move in 20 minutes?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
20 minutes = 120 degrees on the clock
Radius = 3 metres
Angle/360 = Length of Arc/π x diameter
120/360 = Length of Arc/π x 6
Length of Arc = (120 x π x 6)/360
Length of Arc = 6.28 metres. (2 decimal places)
This is the distance the hand moved in 20 minutes.
Hope this helps :-)