Difference between revisions of "Gauss Grade 7 Year 2011 Problem 2"

(Created page with "=== Problem === The value of <math> \sqrt {9 + 16} </math> is <cmath> \textbf {(A) 5.2} \ \ \ \textbf {(B) 7} \ \ \ \textbf {(C) 5.7} \ \ \ \textbf {(D) 25} \ \ \ \textbf {(E) ...")
 
(Solution)
 
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<math> \sqrt {9 + 16} = \sqrt {25} = \sqrt {5^2} = \boxed {\textbf {(E) 5} </math>
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<math> \sqrt {9 + 16} = \sqrt {25} = \sqrt {5^2} = \boxed {\textbf {(E) 5}} </math>

Latest revision as of 14:59, 5 July 2011

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

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