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Gauss Grade 7 Year 2011 Problem 2

Revision as of 15:59, 5 July 2011 by Ahaanomegas (talk | contribs) (→‎Solution)
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Problem

The value of $\sqrt {9 + 16}$ is \[\textbf {(A) 5.2} \ \ \ \textbf {(B) 7} \ \ \ \textbf {(C) 5.7} \ \ \ \textbf {(D) 25} \ \ \ \textbf {(E) 5}\]

Solution

$\sqrt {9 + 16} = \sqrt {25} = \sqrt {5^2} = \boxed {\textbf {(E) 5}}$

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