AutoCad :: Developing Wrap-around Pattern From Cross Section View

Attached is a simple drawing of a round tube sitting on an imaginary level grade. I'm needing to develop a pattern to cut the bottom angle. I'm making a scale model and this is one of the elements. The scale is 1"= 10.66" so this round tube will be 4.5" in diameter. The angle is too gentle to cut in my horizontal band saw; can't fit it between the guides. Years ago, we used to grid out from a base line and develop a continuous curved line on flexible linoleum that when wrapped around the tube, would allow a line to be drawn on what would be my grade level line.

We would then cut the steel tube with a torch on said line. Did this for 24" to 90" diameter pipes. I need to do this for this one cut; I think I can get all the rest of the angles for the project on the saw. I'm hoping that the printable (can be done on more than one sheet if needed and taped together or something) paper pattern can be rendered easily, such as a sheet metal shop might develop a flat pattern for rolling or bending. I'm limited to legal size paper, 8.5 x 17". I'm using AC LT 2011 so I'm limited in my abilities.