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Only one. All squares are figures drawn entirely on a flat surface.
A trapezoid has one surface and its surface area in square units is 0.5*(sum of parallel sides)*height
Cube has 6 surfaces Each surface is 812 x 812 = 659344 square inches All 6 surfaces will total 659344 x 6 = 3956064 square inches
A cuboid has 6 sides/faces/flat surfaces.
2 flat surfaces unless it is rolled up in which case it has 2 curved surfaces.