Question

A steel pipe is 35cm long and it's external diameter is 10 cm . If the thickness of the pipe is 2cm and steel weighs 6 g per cm cube find the weight of the pipe?​

Answer 1

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A steel pipe is 35cm long and it's external diameter is 10 cm . If the thickness of the pipe is 2cm and steel weighs 6 g per cm cube find the weight of the pipe???

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$volume \: of \: the \: pipe \:\large \rightarrow \: \pi \times h \times (r + r) \times (r - r) \\ \longrightarrow \: 35 \times \frac{22}{7} \times (5 + 3)(5 - 3) \\ \longrightarrow5 \times 22 \times 8 \times 2 \\ \longrightarrow \: 1760 \: cm ^{3}$

$1cm ^{2} weight \: = 6 \: gram \\ 1760cm ^{3} \: would \: weight \: = \: 1760 \times 6 \\ = 10560gm \: cm ^{3}$