Find the ratio of the radii of gyration of a circular disc and a circular ring of the same radii about a tangential axis in their planes.

The ratio of the radii of gyration of a circular disc and a circular ring of the same radii about a tangential axis perpendicular to plane of disc or ring is

The ratio of the radii of gyration of a circular disc and a circular ring of the same radii about a tangential axis perpendicular to plane of disc or ring is

The ratio of the radii of gyration of a hollow sphere and a solid sphere of the same radii about a tangential axis

The ratio of the radii of gyration of a circular disc to that of circular ring, each of same mass and same radius about their axes is