Question

an iron pipe is 42 centimetre long and its exterior radius is 4 cm the thickness of the pipe is 1 centimetre and iron weights 100 gram per centimetre cube the weight of the pipe is

Answer 1

cos(coshgfyiufdserddff

Answer 2

length=(height)=42cm
thickness=1cm
therefore,inner radius =42cm-1cm=41 cm
now ,volume of cylinder=π×r square×height
= 22/7×41×41×42
=22*41*41*6
=902*246
=221892 cu.cm
weight of pipe= 100*221892
=22189200gram
=22189.2 kg