Answer
a) 8 sides
b) 72 in
Work Step by Step
a) Oct- is a prefix that means 8. An octagon has 8 sides.
b) $9in\times8=72\ in$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 9 - Section 9.2 - Perimeter - Exercise Set - Page 620: 23
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