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A pen stand is made of wood in the shape...

A pen stand is made of wood in the shape of cuboid with three conical depressions to hold the pens. The dimensions of the cuboid are 15 cm by 10 cm by 3.5 cm. The radius of each of the depression is 0.5 cm and the depth is 1.4 cm n the entire stand.

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The correct Answer is:
523.9 `cm^3`
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