I understand what the reference values are. That's also not the problem.
Maybe let's formulate my question differently: what will you choose for the Area I have to fill in for the reference value for this shape (is it the area of the 2d cone sketch? etc)? And let's say, assuming looking at the "cone picture" the height is in the y direction and width in the x direction. The velocity is coming from the negative y direction towards the cone. And I want to know what the drag will be on the cone with these assumptions.
Again mentioning that the problem is not the not understanding of the drag etc. it's just what I assume the Area to be. And since this is not an Airfoil just using the chord length times the height isn't valid.
You are navigating away from the AIS Discovery experience