QUESTION 9 A metal box (without a top) is to be constructed from a square sheet of metal that is 30cm on a side by cutting square pieces of the same size from the corners of the sheet and then folding up the sides- Find the dimensions of the box with the largest volume that can be constructed in this manner. As your answer please input the value of the maximal volume of the box. QUESTION 10 Find the radius r and height of a closed right circular cylinder with volume of 1281f in3 that has the minimal surface area. As your answer please enter the value of 7' that gives the minimal surface area