Out of a disc of mass M and radius R a concentric disc of mass m and radius r is removed. The M.I. of the remaining part about the symmetric axis will be :

From a disc of radius r_(1) , a concentric disc of radius r_(2) is removed . The mass of the remaining portion is m . Find the M.I. of the remaining about an axis passing through the center of mass and perpendicular to the plane.

From a circular disc of radius R , another disc of diameter R is removed. Locate c.m. of the remaining portion.

From a circular disc of mass M and radius R , a part of 60^(@) is removed. The M.I. of the remaining portion of disc about an axis passing through the center and perpendicular to plane of disc is

From a circular disc of mass M and radius R , a part of 60^(@) is removed. The M.I. of the remaining portion of disc about an axis passing through the center and perpendicular to plane of disc is

From a disc of mass m and radius r , a circular portion of radius (r )/(3) is removed from the edges. Find the M.O.I of the remaining system about a normal through center of original disc

Four similar point masses (each of mass m) are placed on the circumference of a disc of mass M and radius R. The M.I. of the system about the normal axis through the centre O will be: