Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 10 - Area - 10-3 Areas of Regular Polygons - Practice and Problem-Solving Exercises: 14

Answer

2475 $in^{2}$

Work Step by Step

A nonagon has nine sides, so the perimeter is 9 x 20 = 180. A=$\frac{1}{2}$ap A=$\frac{1}{2}$(27.5)(180) A=2475
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