The purpose of ICT is to facilitate the storage, retrieval, transmission, and sharing of information through technology. It enhances efficiency in communication, education, business, and daily life by integrating tools like computers, the internet, and digital communication devices.
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.