plastic drum ofcylindrical shape is made by melting sperical solid pladtic ball of radius 1cm find the number of balls required tobmake the drum of thickness 2cm height 90 cm and radius 30 cm.( drum has no lid)
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vl of ball=4.1cm sq.
no.of balls= vl of cylinder / vl of balls
(here ques can be only solved of cylinder is hollow)
outer radius = radius + thickness
so no.of balls=35060/4
=8765
no.of balls= vl of cylinder / vl of balls
(here ques can be only solved of cylinder is hollow)
outer radius = radius + thickness
so no.of balls=35060/4
=8765
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