Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 8 - Section 8.3 - Regular Polygons and Area - Exercises - Page 378: 7

Answer

r$\approx$11.5 cm

Work Step by Step

s=2$\frac{a}{\sqrt 3}$ s=$\frac{20\sqrt 3}{3}$ r=2(.5s) r=s r=$\frac{20\sqrt 3}{3}$ r$\approx$11.5 cm
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.