Answer
Please see the work below.
Work Step by Step
We know that
$3.0lb=(3.0)(0.454Kg)=1.362Kg$
$2100ft^2=(2100)(9.290\times 10^{-2}m^2)=195.09m^2$
Now $Coverage=\frac{195.09m^2}{1.362Kg}=143\frac{m^2}{Kg}$
Essential University Physics: Volume 1 (4th Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0-134-98855-8
ISBN 13:
978-0-13498-855-9
Chapter 1 - Exercises and Problems - Page 12: 26
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