Question

First and correct answer will be marked as brainliest
The outer diameter of a metallic cylindrical tube is 14cm.Thickness of tube is 1cm.Find the weight of 2m long tube if density of metal is 7gm/cm cube

Answer 1

outer diameter(R)= 14 cm = 0.14 m

thickness of tube(r) =1cm=0.01 m

inner diameter= 0.14-0.01=0.1

height=2 m

volume of cylindrical tube= π(R^2-r^2)j

=22/7× {(0.14^2-0.13^2})×2

= 0.169 m^3

weight= 0.169×0.007=0.0001187 kg