Answer
800
Work Step by Step
If you break them, into 5 boxes: 20x5, 20x5, 20x5, 20x5, and 20x2 and simply add all of the answers for the areas. You get the final answer.100+100+100+100+400=800
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 1.3 - Area and Volume - Exercise - Page 17: 12
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