Geometry: Height of a part volume in a cone

Picture of cone

Hi, I know this is high school math but i feel kinda stupid right now so I am asking it here:

Given is a truncated cone (upside down if relevant). Given is the volume as well as the upper and lower radius.

Now the cone got filled with a given volume. How do i determine the height of the filled liquid?

As you see in the picture, there is a cone (not a triangle). Given is r1w, r2w, and VW and VA

With that at least I am able to calculate everything else, but not hA. Can someone of you please help me?

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