The moment of inertia of a thin square plate \( A B C D \) of uniform thickness about an axis pa...

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The moment of inertia of a thin square plate \( A B C D \) of uniform thickness about an axis passing through the centre \( O \) and perpendicular to the plane of the plate is \( I \). Which of the following is false?
(1) \( l=l_{1}+l_{2} \)
(2) \( l=l_{1}+l_{3} \)
(3) \( I=I_{4}+I_{2} \)
(4) \( I=I_{1}+I_{2}+I_{3}+I_{4} \)
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