# Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Practice and Problem-Solving Exercises - Page 20: 21

$16$

#### Work Step by Step

We will use method 2 from the textbook of estimating a square root. Using a calculator's square root function, we find that $\sqrt {242}\approx15.56$ Since $15.56$ is closer to $16$ than to $15$, we round to $16$, which is the nearest integer.

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