$[5]$ A uniform solid disk of mass $m=1\mathrm{.}00kg$ and radius $r=0\mathrm{.}200m$ rotates about a fixed axis perpendicular to its face with an angular frequency $6\mathrm{.}00ra\frac{d}{s}.$

Calculate the magnitude of the angular momentum of the disk when the axis of rotation $($a$)$ passes through its center of mass and $($b$)$ passes through a point midway between the center and the rim.