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

Firstly, find the volume of the pipe.
πh(R+r) (R-r)
35*22/7*(5+3)(5-3)
=5*22*8*2
=1760cm^3
1cm^3 weighs 6 gram
1760cm^3 would weigh=1760*6 =10560gmcm^3