Good Morning! 🌞

I want to calculate something in Excel but not sure of the best way.

I have two circles, one inside each other. I've got the part of the equation done that will calculate the area between the two circles.

What I need to do next is calculate "filler" for this area based on "fillers" of certain diameters.

My fillers are the following:

Ø.0645
Ø.1045
Ø.110
Ø.135

I need the formula to be able to mix & match fillers different fillers based on the area that remains between the two circles.

Can anyone assist?

Thank you!