Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.2 Geometry Essentials - A.2 Assess Your Understanding - Page A19: 26

Answer

$36\ cm^2$

Work Step by Step

The area $A$ of a rectangle is length times width; that is $$ A=lw= 4\times 9=36\ cm^2 .$$
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