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
Geometry: Common Core (15th Edition)
by Charles, Randall I.
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 - Page 632: 14
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