Answer
$$11.7 \times 10^{24}$$
Work Step by Step
We have
$$\frac{(3.03\times 10^{12})^2}{\sqrt{615 \times 10^{-3}}} =\frac{(3.03\times 10^{12})^2}{\sqrt{61.5 \times 10^{-2}}} \\=\frac{9.181\times 10^{24}}{7.842\times 10^{-1}} =1.1707\times 10^{24+1}\\=11.7 \times 10^{24}$$
which is in the engineering notation.
