the outer diametre of a metallic cylinder tube is 14cm and thickness of the tube is 1cm. find the weight of 2m long tube if the density of the metal is 7gm/cm^3
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Inner diameter=2.5㎝
Inner radius=2.5/2=1.25㎝
Thickness=0.29㎝
Outer radius=1.25+0.29=1.54㎝
Volume of tube=π(R
2
−r
2
)×h
=
7
22
(1.54
2
−(1.25)
2
)×30
=76.30㎤
Weight of tube=76.30×7=534.10ℊ
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