Select the true statement(s). The volume of a rectangular prism is half of the number of unit cubes that are packed inside the rectangular prism with no overlaps or gaps. If a rectangular prism is packed with 108 unit cubes with no overlaps or gaps, the volume of the rectangular prism is 216 cubic units. The volume of a rectangular prism is found by counting the number of the unit cubes that are on the bottom layer with no overlaps or gaps. If 54 unit cubes are packed in a rectangular prism with no overlaps or gaps, then the volume of the rectangular prism is 54 cubic units. If a rectangular prism has a volume of 100 cubic units, then it can be packed with exactly 100 unit cubes with no overlaps or gaps. The volume of a rectangular prism is found by counting the number of unit cubes that are packed inside the rectangular prism with no overlaps or gaps.