A cylindrical tube open at both ends is made of iron sheet which is 2cm thick. If the outer diameter is 16cm and its length is 100cm , find how much cubic centimeters of iron have been used in making the tube?
We have,
Outer radius(R) = 8cm
Inner radius (r) = 6 cm
Height of cylinder (h) = 100 cm
So the volume of the metal used
