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Licemer1 [7]
3 years ago
6

A circle has an arc of length 20π that is intercepted by a central angle of 180°. What is the radius of the circle?

Mathematics
1 answer:
Bond [772]3 years ago
8 0

Answer:

10π

Step-by-step explanation:

RULE:  The angle measure of the central angle is congruent to the measure of the intercepted arc.  

RULE:  Central Angle = Arc length

Given:  

Arc length (20 π) = central angle (180)

we know 180 degrees is a straight line, thus a semi-circle is created.  This would be the diameter.  

1/2 diameter is the radius.  20π/2 is the radius.  

10π

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