CK-12 Geometry-Concepts

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

4.

5. Describe and correct the error in findingy.

10 · 10 =y· 15 y

100 = 15 y^2

20

3

=y^2

2

√

15

3

=y ←−yis notcorrect

Solve for the unknown variable.

6.