V = Pi*r^2*h V = Volume Pi = 3.14157.... r = radius of the cylinder h = height If you want the surface area, 2* (2 * Pi * r )+ h * 2 * Pi * r = SA where SA is in ft^2. This includes the ends like a can would look like. If you are only looking at a hollow tube then the SA formula is: h * 2 * Pi * r = SA ---------- From: Ed Cosper To: [log in to unmask] Subject: [TN] Area calculation