A storage unit is in the shape of a right rectangular prism with a length of 15 feet, a width of 5.5 feet, and a height of 7 feet. the unit is completely filled with matter that weigh, on average, 0.82 pound per cubic foot. what is the weight, in pounds, of the contents in the container? a: 103 ibs b: 473.55 ibs c: 1632 ibs d: 704. 27 ibs