Answer
9 mm
Work Step by Step
Let x equal the distance from the center of the circle to the chord.
x$^2$=15$^2$-12$^2$
x$^2$=225-144
x$^2$=81
x=9
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 6 - Review Exercises - Page 306: 1
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