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The inner radius of a metallic tube of density 10 gper cm3 is 7 cm. The thickness of the tube is0.35 cm. Find the weight of the tube if it is of length30 cm |
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Answer» Inner radius,r=7cmthickness=0.35 cmso,outer radius,R = 7+0.35=7.35 cmheight,h= 30 cmvolume=pi×(R^2-r^2)×h=22/7×(7.35^2-7^2)×100=22/7×(54.0225-49)×100=22/7×5.0225×100=11049.5/7 since,density=10 gm/cm^3also,weight=volume×densityweight=11049.5/7×10 =15785 g |
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