A rectangular building with a square front is to be constructed of materials that costs 14 dollars per ft for the flat roof, 18 dollars per ft for the sides and the back, and 12 dollars per ft for the glass front. We will ignore the bottom of the building. If the volume of the building is 5,600 fts, what dimensions will minimize the cost of materials? (Round your answers to the nearest hundreth, and enter the dimensions in order from the smallest to the largest.) 16.7 ft by 16.7 ft by 20.1 ft Submit Answer Incorrect. Tries 5/99 Previous Tries This discussion is closed. Send Feedback