CK-12 Geometry-Concepts

http://www.ck12.org Chapter 9. Circles

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Answers:

Use the Tangent Secant Segment Theorem.

182 = 10 ( 10 +x)

324 = 100 + 10 x

224 = 10 x

x= 22. 4

2.

x^2 = 16 ( 16 + 25 )

x^2 = 656

x= 4

√

41

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