A local store is holding a sandcastle building competition where the winner gets $900. Each contestant must buy their own sand. Emily wins by building a castle made up of a rectangular center portion of the castle and four cylinder shaped towers on the outside. The rectangular portion is 4 feet in length, 3 feet in width and 4 feet in height and the cylinder towers have a radius of 2 feet and a height of 5 feet. The sand cost her $1.50 per cubic foot. After cost how much did Emily profit? The volume of the rectangular prism is