A uniform solid disk of mass 3.00 kg and radius 0.200 m rotates about a fixed axis

Question:

A uniform solid disk of mass 3.00 kg and radius 0.200 m rotates about a fixed axis perpendicular to its face. If the angular frequency of rotation is 6.00 rad/s, calculate 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.