Laser hair removal can reduce hair growth by approximately 80% permanently. However, it does not guarantee 100% hair removal as some fine or light hair may not respond to the laser.
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.