Elementary Geometry for College Students (7th Edition)

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: 16

Answer

r=$\frac{20\sqrt 3}{3}$ s=$\frac{20\sqrt 3}{3}$

Work Step by Step

The radius and side of a regular hexagon are congruent. the apothem is the altitude of an equilateral triangle formed by its two surrounding radii and connected side. Therefore the apothem is the long leg of a 30 60 90 triangle with a radius for a hypotenuse. a=.5s$\sqrt 3$ 20=s$\sqrt 3$ s=$\frac{20\sqrt 3}{3}$ r=s=$\frac{20\sqrt 3}{3}$
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