Given that $\sqrt{10} = 3.16$,what is the value of $\sqrt{\frac{4}{12.1}}$ to one place of decimal?

The square root of $\frac{9.5 \times 0.0085 \times 18.9}{0.0017 \times 1.9 \times 2.1}$ is

If $\sqrt{1+\frac{55}{729}}=1+\frac{x}{27},$ then the value of $x$ is

$A$ general wishing to draw up his $16160$ men in the form of a solid square found that he had $31$ men over. The number of men in the front row is:

Find the smallest number,which,when added to $3579$ gives a perfect square.

In the following questions,two equations numbered $I$ and $II$ are given. You have to solve both the equations and give the answer.
$I: \frac{13}{\sqrt{x}} + \frac{9}{\sqrt{x}} = \sqrt{x}$
$II: y^4 - \frac{(13 \times 2)^{9/2}}{\sqrt{y}} = 0$