Answer
a=5
r=5$\sqrt 2$
Work Step by Step
2a=s
2a=10
a=5
The radius, apothem, and half of a side of a square form a 45 45 90 triangle. Therefore, the radius is equal to the apothem times the square root of 2.
r=a$\sqrt 2$
r=5$\sqrt 2$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 7 - Section 7.3 - More about Regular Polygons - Exercises - Page 343: 13
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