A cube of volume 125 cubic feet is placed inside a cylinder.
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08 Mar 2025, 04:43
Volume of a Cube is Side $3=125⇒$ Side $=3√125=5$
The minimum possible height of the cylinder, in which a cube of edge 5 each is inscribed, can be 5 only and the diagonal of the one of the faces of cube i.e. $√2×Side=√2×5=5√2$ is equal to the diameter of the cylinder, so we get $2r=5√2⇒r=5√22$ (Diagonal in a square is $√2$ times the side \& a cube has all square faces).
Finally the minimum possible volume of the cylinder can be $πr2h=π×(5√22)2×5=250π4=62.5π$ which is same as column B quantity $125π2=62.5π$
As the volume of the cylinder is greater than or equal to $62.5π$ i.e. column A quantity is greater than or equal to $62.5 \pi$, it cannot be uniquely compared with column B quantity i.e. $62.5π$.
Hence the answer is (D).