If $x * y = x + y + \sqrt{xy}$,the value of $6 * 24$ is

If $\sqrt{0.04 \times 0.4 \times a} = 0.4 \times 0.04 \times \sqrt{b},$ then the value of $\frac{a}{b}$ is

In the following questions,two equations numbered $I$ and $II$ are given. You have to solve both the equations and give the answer.
$I$: $\sqrt{25 x^{2}} - 125 = 0$
$II$: $\sqrt{361} y + 95 = 0$

What should come in place of both the question marks in the equation $\frac{?}{\sqrt{128}} = \frac{\sqrt{162}}{?}$?

$\sqrt{10} \times \sqrt{15} = ?$

$1.5^{2} \times \sqrt{0.0225} = ?$