Answer
32 ft squared
Work Step by Step
A=(a+b/2)h
A=(7 ft + 9 ft / 2)4 Ft
Add 7 + 9 first: (16 ft/2)4 ft
Next, divide 2 into 16: (8 ft)4 ft
Multiply 8 x 4
A=32 ft squared
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.4 - Formulas - Exercise - Page 22: 21
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