Answer
mm
Work Step by Step
The cardboard was 3 mm thick. As it is cardboard the thickness can only be measure in millimeter
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 7 - Measurement - 7.2 The Metric System - Length - 7.2 Exercises - Page 493: 14
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