Answer
$121.5 \ ft^2$
Work Step by Step
For a cube, the surface area = number of faces * area of a face = $6*s^2$, where $s$ is the side length.
We're given $s$, and we know it equals $4.5$.
$SA = 6s^2 = 6*(4.5)^2 = 121.5 \ ft^2$
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Skills Handbook - Area and Volume - Exercises - Page 976: 11
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