Answer
$cm^2$.
Work Step by Step
Usually, the cross section of a log is a somewhat small area. Thus, the most reasonable unit here is $cm^2$.
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 3.4 - Volume and Area - Exercise - Page 147: 35
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