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### Question Asked by a Student from EXXAMM.com Team

** Q 1720656511. ** A hollow cylindrical drum has internal diameter

of `30 cm` and a height of `1 m`. What is the

maximum number of cylindrical boxes of diameter

` 0 cm` and height `10 cm` each that can be packed

in the drum'?

**CDS 2015 Paper-2**