The thickness of a metallic tube is 1cm and the inner diameter of the tube is 12cm. find the weight of 1m long tube, if the density of the metal is 7.8g/cm cube?
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Answer:
Area of a circle = �r�
Inner diameter = 12 cm
Inner radius = 6 cm
Outer radius = 6+1 = 7 cm
Cross sectional area of an annulus (ring)
= �(r2�-r1�)
=(7�-6�)�
=13� cm�
Volume for a 1 metre tube:
V=13�&100cm cm�
=1300 cm�
Mass ("weight")
=volume * density.
Step-by-step explanation:
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