Triantriangle mesh

I want to make mesh like this, can you help me?
8m 10m 3m elipsoid



RHİNO 7

Hello
if you want help it is better that you gave more information. You can read advice’s here.
https://discourse.mcneel.com/tag/grasshopper

Here are some problems on your questions :

Ellipsoid, why not posting the geometry you have done ?

Is it open (not an ellipsoid) or closed ? From your screen capture it looks like half or less ellipsoid !!!

Why not giving the reference from your second image ? it is an old work from @Arthur_Mamou-Mani