UOM conversion factor and manufacturing


I have some use cases that I’m wondering how I can define the process to be work on the application.

I have an item that have an area defined, this item I buy by piece and I make some operation to cut, fold and nail. Also I have the scrap to be reused in other projects.
plywood 0.578’ x 47.75’ x 95.75’, uom each
Area 4572.0625 in2

Other case would be an hardwood floor, that I buy each box with a number of items inside and I have an area defined.
7 pieces of hardwood floor 5’ x 0.75’, uom case
Area 26.25 in2

How can I handle it on manufacturing? Did someone face it before?

Thanks. Regards.