Answer
$\bf{B}$
Work Step by Step
The relationship between the chords of a circle can be written as:
$a \times b = c\times d$
or, $(22.5)(x)=(15)(30) \\ x=20$
Therefore, the correct option is $\bf{B}$.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Common Core End-of-Course Assessment - Page 881: 41
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