If $0.13 \div p^{2} = 13$,then $p$ equals

In the following questions,two equations numbered $I$ and $II$ are given. You have to solve both the equations and give the answer.
$I$: $5x^2 - 18x + 9 = 0$
$II$: $3y^2 + 5y - 2 = 0$

The value of $\frac{1+\sqrt{0.01}}{1-\sqrt{0.1}}$ is nearly equal to

Given $\sqrt{5}=2.2361$ and $\sqrt{3}=1.7321$,then $\frac{1}{\sqrt{5}-\sqrt{3}} = $

What least number should be subtracted from the square root of $21 \frac{15}{289}$ so that the result is a whole number?

$\frac{\sqrt{4375}}{\sqrt{7}} = ?$