Hello, I’ve been trying to calculate the area of the porous cell structure like the picture beneath

I’ve uploaded the grasshopper file and I bake the fillet part and made a mesh with it which worked out great

However, as I tried to calculate the area of the fillet to get the volume fraction of the cell structure, it didn’t work out so well

Can I get some help with this problem? Would really appreciate everyone’s help, thanks

Voronoi_Basic_2021_Jul25b.gh (7.4 KB)