Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Practice and Problem-Solving Exercises - Page 20: 24


$4$ meters

Work Step by Step

A square with area $18$ square meters will have side lengths that are the square root of the area. This is because, for a square, Area = $s^2$, so $s=\sqrt A$ With an area of 18 meters squared, $s=\sqrt {18}$. We will use method 2 in the book to estimate the square root. According to a calculator's square root function, $\sqrt {18}\approx4.24$ meters Since $4.24$ is closer to $4$ than to $5$, we round to the nearest integer which is $4$ meters.
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