Question

Pic below! :)

Answer 1

@Michele_Laino

Answer 2

hint:
I rewrite your numbers as below:
\[\Large \begin{gathered}
{4^3} = 64 = \sqrt {{{64}^2}} = \sqrt {4096} \hfill \\
\\
\sqrt {40} \hfill \\
\\
\sqrt {13} \hfill \\
\\
\sqrt 7 \hfill \\
\\
\frac{{14}}{9} = \sqrt {{{\left( {\frac{{14}}{9}} \right)}^2}} = \sqrt {\frac{{196}}{{81}}} \cong \sqrt {2.42} \hfill \\
\end{gathered} \]
so, what can you conclude?