13. A closed steel cylindrical container has a diameter of 186 mm and its height is 1/3 of its base radius. (i) Find the total surface area of the container, giving your answer in square centimetres. The lid of the container is now removed. The exterior of the container, including the base, is painted indigo (ii) Express the area of the container that is painted as a fraction of the total surface area found in (i).