Material handling refers to the short-distance movement of goods or materials within a facility, warehouse, or manufacturing plant. It involves moving items from one location to another and typically includes tasks like loading, unloading, and stacking.
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.