Tweezers are precision tools used to pull out hair by grasping and plucking them from the root. They are commonly used for shaping eyebrows or removing unwanted hair. Other options like blackhead remover and cuticle pusher serve entirely different purposes.
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.