Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 4 - Section 4.1 - Approximate Numbers and Accuracy - Exercise - Page 163: 31

Answer

There are 6 significant digits.

Work Step by Step

To find the number of significant digits in the measurement $100.020~in$, we follow the rules on page 162 of the book. We use rule #1: all non-zero digits are significant. Thus "1,2" are significant. We also use rule #2: all zeros between significant digits are significant; that is, we have here 3 zeros which are significant. We also use rule #4: all zeros to the right of a significant digit and decimal point are significant; that is, we have here 1 zero which is significant. Thus, there are 6 significant digits.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.