Answer
$11\frac{1}{4}ft^2$
Work Step by Step
The area of a triangle is 1\2 base times height.
$A=\frac{1}{2}(4\frac{1}{2}ft)(5ft)=\frac{1}{2}(\frac{9}{2}ft)(5ft)=\frac{45}{4}ft^2=11\frac{1}{4}ft^2$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 9 - Section 9.3 - Area, Volume, and Surface Area - Exercise Set - Page 633: 4
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