A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder of radius 6 cm. Find the height of the cylinder.
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`" "(4)/(3) pir^(3) = pi R^(2)h` `" " (4)/(3) (4.2)^(3) = (6)^(2) h` `" " rArr h = (2744)/(100)` `" "therefore h = 2* 744 cm `
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