hi all,

just getting stuck on something I know I have answered but forgot how to solve it lol

the question is:

"State the Volume of the metal work." Which is a cylinder pipe.

Outside diameter: 25mm

Wall thickness: 6mm

Length of Pipe: 2m

I know the formula, and how to transpose but I cant seem to get it correct.

the answer is 0.000716m3, according to book, but Im not sure?