Answer
$$116 \ cm^2.$$
Work Step by Step
Since $1 in= 2.54 cm$, then we have
$$18\ in^2=18 \times 2.54^2 \ cm^2 =116 \ cm^2.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 3 - Section 3.7 - Metric and U.S. Conversion - Exercise - Page 155: 27
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