27x27=729
100x100=27x27 200x49 x4=360,001,414,200
27 x 27 = 729 square feet 4 x 8 = 32 square feet You need 22.79 sheets to cover the floor OR the ceiling. If you intend to cover any walls, then in order to help you with THAT bill of materials, we would need to know the floor-to-ceiling height.
31