To remove a stain, the first step is to act quickly and remove the stain when it is fresh. After that, soak the stain in cold water to loosen it. Then, soak it in warm soapy water for further cleaning, and finally expose it to sunlight to help remove any remaining marks.
On the day of her examination, Riya sharpened her pencil from both ends as shown below. 
The diameter of the cylindrical and conical part of the pencil is 4.2 mm. If the height of each conical part is 2.8 mm and the length of the entire pencil is 105.6 mm, find the total surface area of the pencil.