This is almost perfectly clear, nice wording.
- “as cut” shows that you can mess up and use multiple sheets, but the pieces fit in a single cut diagram.
- along with “from a single x by y sheet” show that these dimensions matter, not just by theoretical X * Y inches squared area or cubic volume,
so a 9x36" piece should be unlegal.
Some simliar contests would allow a 12x12x0.0625 sheet AND a 12x12x0.03125 sheet, by parsing “up to” as allowing variable thickness.
Are multiple thicknesses of polycarbonate allowed in this contest?