A uniform solid disk of mass m $=2\mathrm{.}99$ kg and radius r $=0\mathrm{.}200$ m rotates about a fixed axis perpendicular to its face with angular frequency $5\mathrm{.}92$ rad$/$s$.$

$($a$)$ Calculate the magnitude of the angular momentum of the disk when the axis of rotation passes through its center of mass.

kg $$ m$2/$s

$($b$)$ What is the magnitude of the angular momentum when the axis of rotation passes through a point midway between the center and the rim?

kg $$ m$2/$s