Because I am the turboest of nerds I have made this a spreadsheet as well. Can’t actually share it for privacy reasons, but it fits within a 4x5 set of cells if anyone wants to copy it. You don’t even need to know what the math is doing, just copy the green highlighted functions into the cells verbatim and it should work like a charm. Just remember you’re using radii, not diameters
Race and gender are both social constructs, but they aren’t analogous. Race is inherited in a way gender isn’t. You are the race you are because your parents are the races they are. But you aren’t a boy because your dad is a boy, and you aren’t a girl because your mom is a girl.