From a circular disc of radius R and mass 9M, a small disc of radius R/3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is (2005) (a) 4MR² (c) 10MR² (b) (d) 40 9 37 9 MR² -MR² R/3 R
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