Moment of Inertia of a Disk Calculator
This Calctown Calculator calculates the Moment of Inertia of a Disk about a Perpendicular and Planar axis passing through the center of the ring.
Moment of Inertia of a Disk Calculator

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where
Iz = moment of inertia about perpendicular axis of rotation
Ix = Iy = moment of inertia about planar axis of rotation
m = mass of the disk
r = radius of the disk