Answer
286 windows
Work Step by Step
Each row of windows has
$(7\times2)+(4\times2)=14+8=22$ windows.
There are 23 floors (rows) of windows.
$\ \ \ 22$
$\underline{\times23}$
$\ \ \ 66$
$\underline{\ 220}$
$\ 286$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 1 - Section 1.5 - Multiplying Whole Numbers and Area - Exercise Set - Page 52: 101
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