Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - 10.3 Polygons, Perimeter, and Tessellations - Exercise Set 10.3: 21

Answer

84yd

Work Step by Step

Perimeter of a polygon = sum of length of all its sides Thus perimeter = 12+9+9+21+21+12= 84yd
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