The outer radius and inner radius of a 30  cm long cylindrical gold pipe are 14  cm and 7  cm res...

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The outer radius and inner radius of a 30  cm long cylindrical gold pipe are 14  cm and 7  cm respectively. It is filled with bronze. The densities of gold and bronze are 20 gm / cm^3 and 30 gm / cm^3 respectively. Find the weight of the cylinder formed. (in gm)
(a) 66150 π
(b) 99225 π
(c) 132300 π
(d) 198450 π

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