Answer
a. $$70.4 \ cm^2 .$$
b. $$95.5 \ cm^2 .$$
Work Step by Step
a. The lateral surface is
$$ 2r \pi \times h=4 \pi \times 5.6 =70.4 \ cm^2 .$$
b. The total surface is
$$ 2\times4\pi \ cm^2+70.4 \ cm^2=95.5 \ cm^2 .$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 12 - Review - Page 444: 31
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