College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Appendix A - Calculations and Significant Figures - A. Exercises - Page 692: 6



Work Step by Step

If we take the square root of 427.3, then we get an approximate answer of 20.6712360540. With square-root problems, we need to express the answer with the same number of significant figures as the value. In this case, we have four significant figures, so we express the answer in four significant figures. The final answer rounded to four significant figures is 20.67.
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