The top of a 16-ounce can of a drink is three times thicker than the sides and bottom (SO
 that the flip-top opener will work properly), and the can has a volume of 473 cubic
 centimeters. What should the radius and height of the can be in order to use the least
 possible amount of metal? [ Assume that the entire can is made from a single sheet of
 #metal, with three layers being used for the top.]
 A) r = 3 cm; h = 16.73 cm
 B)=3.5 cm; h = 12.29 cm
 C)=3.35 cm; h = 13.41 cm
 D)= 4.35 cm; h = 14.41 cm
 E)= 6.7 cm; h= 3.35 cm