The entire can needs to be painted, including the top and bottom. If the diameter of the lid (x) is 5 cm, and the height of the can (y) is 9 cm, what is the approximate total surface area that will need to be painted?

Answer 1

surface area
= 2π(2.5)^2 + 2π(2.5)(9)
= ---

Answer 2

141.37 + 39.26 = 180.63