(2 points) An aluminum can is to be constructed to contain 1500 cm of liquid. Letr and h be the radius of the base and the height of the can respectively. a) Express h in terms of r. (If needed you can enter x as pi.) h = b) Express the surface area of the can in terms of r. Surface area = C) Approximate the value of that will minimize the amount of required material (ie the value of that will minimize the surface area). What is the corresponding value of h