A total charge $4\mathrm{.}9{10}^{-6}C$ is distributed uniformly throughout a cubical volume whose edges are $7\mathrm{.}0cm$ long.

$($a$)$ What is the charge density in the cube $($in $\frac{C}{m^3})?$

$\frac{C}{m^3}$

$($b$)$ What is the electric flux $($in $N*\frac{m^2}{C})$ through a cube with $11\mathrm{.}0cm$ edges that is concentric with the charge distribution?

$N*\frac{m^2}{C}$

$($c$)$ Do the same calculation for cubes whose edges are $18\mathrm{.}0cm$ long and $4\mathrm{.}0cm$ long.

$18\mathrm{.}0cm$ edge cube $=$

$4\mathrm{.}0cm$ edge cube $=376045\mathrm{.}1977N*\frac{m^2}{C}$

$($d$)$ What is the electric flux $($in $N*\frac{m^2}{C})$ through a spherical surface of radius $2\mathrm{.}0cm$ that is also concentric with the charge distribution?

$N*\frac{m^2}{C}$

D only please