Please include detailed drawings for the following problem:

$($a$)$ In a FCC unit cell, draw a $(210)$ oriented lattice plane. In your drawing, specify the chosen origin and the x$,$ y$,$ and z coordinate directions.

$($b$)$ Draw a top view of a FCC $(210)$ lattice plane, indicate atomic positions, and indicate the $($two$-$dimensional$)$ unit cell parameters of such a plane.

$($c$)$ What is the planar density of a $(210)$ lattice plane in FCC Rh $($a$=3\mathrm{.}8034$ A$)?$