Answer
precision 1 km
GPE 0.5 km
Work Step by Step
The last significant digit is the 5 in the ones position, so the precision is 1.
Greatest possible error is half the precision.
$0.5\times1=0.5$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 4 - Section 4.2 - Precision and Greatest Possible Error - Exercise - Page 166: 5
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