Answer
$109.36\ cm^2$
$0.011\ m^2$
Work Step by Step
$A=\frac{\pi D^2}4,\ D=11.8\ cm$
$A=109.36\ cm^2$
We use stoichiometry, making sure that all units cancel out to $m^2$, to obtain:
$109.36\ cm^2 \times 1\ m^2/10^4cm^2=0.011\ m^2$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Let's Review: The Tools of Quantitative Chemistry - Study Questions - Page 43a: 8
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