#### Answer

$5.25\ cm^2$
$5.25\times10^{-4}m^2$

#### Work Step by Step

$2.5\ cm\times 2.1\ cm = 5.25\ cm^2$
We use stoichiometry, making sure that all units cancel out to $m^2$, to obtain:
$5.25\ cm^2\times 1\ m^2/10^4\ cm^2=5.25\times10^{-4}m^2$

Published by
Cengage Learning

ISBN 10:
1133949649

ISBN 13:
978-1-13394-964-0

$5.25\ cm^2$
$5.25\times10^{-4}m^2$

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