Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 7 - Measurement - Test: 11

Answer

cm

Work Step by Step

This page is about 21 cm wide. Length can be measured in m, cm or mm. If we choose 21 m it will very long for the width of the page even 21 mm will be short. So 21 cm is the correct choice.
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