I'm sure you didn't read the rules well, missing the presentation. in your profile there is written student but you do not understand what and at what level you are with catia.
I do not use it anymore and I know it very little, but, although every cad has its philosophy, there are still common things a little to all cad. from how the question is placed I would say that of cad you are just fasting. Then ask if there is extrusion command and talk about coneing. But you should know that the cone is a solid revolution.
answer to your question: draws a rectangle triangle and then revolutions for 2pi on one of the caties and here is the cone you try to do, I suppose.
