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The concrete block shown has wall thicknesses of 40 mm, voids that are 95 mm x 110 mm, and is 190 mm x 390

The concrete block shown has wall thicknesses of 40 mm, voids that are 95 mm x 110 mm, and is 190 mm x 390 mm overall. Calculate the moment of inertia about the centroidal X'-X' axis. [1] X 390 mm X' 190 mm

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