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Mathematics 15 Online
OpenStudy (anonymous):

Walk me through this? What is the measure of a central angle with a 12 foot radius and an intercepted arc of 20 feet?

OpenStudy (mertsj):

1. Find the circumference of the circle: C=2pi r 2. Find what fraction of the circle the intercepted arc is by putting 20 over the circumference 3. If you want the answer in radians, multiply the fraction from Step 2 by 2 pi 4. If you want the answer in degrees, multiply the fraction from Step 2 by 360

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