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CD is the Diameter. The measure of Arc CD is 11x Find the length of the radius in the circle.

CD is the Diameter. The measure of Arc CD is 11x Find the length of the radius in the circle. class=

Answer :

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Today at 5:12 AM

Answer:

11

Step-by-step explanation:

Using S = rA, where S is arc length, r is radius and A is angle(in radians).

Comparing: S = 11π, A = 180° = π

=> 11π = rπ

=> 11 = r

Required radius is 11 unit

Method 2:

This is a semi circle, circumference of semi circle is πr, so

πr = 11π

r = 11

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