an iron pipe is 21m long and it's exterior diameter is 8cm. if the thickness of the pipe is 1cm and iron weight is 8g/cm cube, find the weight of pipe.
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first of all we have to find the volume = 22/7xrxrxh
and then multiply it by weight =8g
the answer will be correct
and then multiply it by weight =8g
the answer will be correct
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