Answer
$$14.9\times 10^{18}.$$
Work Step by Step
We have
$$ (35.5\times 10^{6} ) (420\times 10^{9})=14910 \times 10^{15}\\
=14.9\times 10^{18}.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 2 - Section 2.7 - Engineering Notation - Exercises - Page 130: 25
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