how much wood is used to make a cubical pen stand of lenght 9 cm and 2cm thickness
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A pen stand made of wood is in the shape of a cuboid with four conical depressions to hold pens. The dimensions of the cuboid are `15 cm xx 10 cm xx3.5 cm`.The radius of each of the depression is 0.5 cm and the depht is 1.4 cm .Find the volume of the wood in the entire stand correct to 2 decimal places.
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