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Four equal masses, \( m \) each are placed at the comers of a square of length (I) as shown in the figure. The moment
P of inertia of the system about an axis passing through \( \mathrm{A} \)

W and parallel to DB would be:
[JEE Main-2021 (March)]
(a) \( \sqrt{3} \mathrm{ml}^{2} \)
(b) \( 2 \mathrm{ml}^{2} \)
(c) \( \mathrm{ml}^{2} \)
(d) \( 3 \mathrm{ml}^{2} \)
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