While alertness, thoroughness, and patience are all crucial qualities for a static security guard, interest is not as essential. A security guard must remain alert, thorough in their duties, and patient, especially during long shifts or monotonous tasks. However, ’interest’ is a subjective quality that does not directly impact the effectiveness of security services as the other qualities do.
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.