Mathematics
The given figure shows a solid sphere and a closed cylindrical container, both having the same heights and same radii. The volume of air left in the cylinder is :
6πr3
4πr3

Mensuration
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Answer
From figure,
Radius of sphere = Radius of cylinder = r
Height of cylinder (h) = 2r
Volume of air left = Volume of cylinder - Volume of sphere
Hence, Option 3 is the correct option.
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