ANSWER:
[tex]c=\sqrt[]{61}=7.81[/tex]
STEP-BY-STEP EXPLANATION:
According to the figure we can see that a right angle is formed, therefore we can apply the Pythagorean theorem
[tex]c^2=a^2+b^2[/tex]
replacing we have
[tex]\begin{gathered} c^2=5^2+6^2 \\ c^2=25+36 \\ c=\sqrt[]{61}=7.81 \end{gathered}[/tex]
