math
posted by kayla on .
the minute hand of a clock is 6 inches long. how far does the tip of the minute hand move in 15 minutes?
what is the circumference of a circle with radius of 6 in?
It is 12 pi
What fraction of a circle does the minute hand move in 15 minutes?
It is 90 degrees
So what do I do with those numbers

Yes. The circumference of the circle is 12 times pi.
C = 12 * 3.14 = 37.68 inches
15/60 = 1/4
Remember that 15 minutes is onequarter of an hour.
In 15 minutes, the minute hand moves around 1/4 of the circumference.
Circumference equals 
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1.57