Julie has a 20- gallon fish tank full of water that she needs to move from one room to another. she pours out all the water. the fish tank is a right rectangular prism. the fish tank weighs 225 pounds when it is filled with water. the dimensions of the water inside the fish tank are 30 inches by 12 inches by 12 inches. 1 cubic foot weight 62.4 pounds. enter the weight of the fish tank when it is empty