I am happy to learn programming in 3D modeling with OpenSCAD.
www.makerbot.com/tutorials/openscad-tutorials is very useful and easily formatted and structured to pick up and learn.

Hope to design more models using OpenSCAD soon.

Here is the command:
rotate([90,135,270])translate([7,5,7])scale([1,0.5,1])cylinder(10,5,10);

*To export the design in .stl format, remember to render it first by pressing F6 => you will then see "Rendering finished" in the console window, next, continue with the export .stl.