An iron pipe is 22 cm long and its exterior diameter is 8 cm. If the thickness of the pipe is 2 cm and iron weigh 9g/cm cube, find the weight of the pipe.
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Step-by-step explanation:
Answered by
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Answer:
Step-by-step explanation:
Here, length means height.
Exterior diameter=8cm
radius=d/2
=8/2
=4cm
Let us take exteror radius as R
thickness=2cm
Interior radius = exterior(outer) radius-thickness
=4-2
= 2cm(let inner radius be r)
Volume of pipe (which is hollow)
= π(R squrae-r squrae)*height
=22/7(4 square-2 square)*22
=22/7(16-4)*22
=22/7*12*22
=829.71 cubic cm
weight = 829.71*9
=7467.39 gram
= 7.47 kilogram
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