Ateco Stainless Steel Medium Pyramid Ice Cream Mold, 3.5 x 2.5-Inches, 1-Piece

Does anyone know the capacity for these molds in terms of cups? I'm looking to fill them with couscous or rice.

How many ounces is the 31/2 by 21/2 pyramid?

How thick is the mold? Not the size of the mold, the thickness of the metal

would this work for plating rice (like an Indonesian Tumpeg) ?