<PRE><B>Question 726620</B>
If the circumference of a circle is 24, and the angle measure of an arc is 120o, which is the length of the arc?
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Using radian meansure
theta = (arc length)/radius
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arc length = radius*theta
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Your Problem:
120 degrees = 120(pi/180) = (2/3)pi radians
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circumference = 2pi*r
24 = 2pi*r
r = 12/pi
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arc length = (12/pi)(2/3)pi = 8 units
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Cheers,
Stan H.
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