the length of a metallic tube is 1 m. , it's thickness is 1cm and it's inner diameter is 12cm. Find the weight of the tube is the density of the metal is 7.7 gram per cube centimetre.
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Step-by-step explanation:
Inner radius,r=12/2=6cm
thickness=1cm
so,outer radius,R=6+1=7cm
height,h=1m=100cm
volume=pi×(R^2-r^2)×h
=22/7×(7^2-6^2)×100
=22/7×(49-36)×100
=22/7×13×100
286/7×100
=28600/7
since,density=7.7gm/cm^3
also,weight=volume×density
weight=28600/7×7.7gm
=31460gm
or,31.46 kg
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