Active listening is the practice of paying full attention to the speaker, understanding their message, responding thoughtfully, and remembering key points of the conversation. It requires focusing on the speaker’s words, observing their non-verbal cues, and providing feedback that demonstrates understanding. Active listening enhances communication, fosters better relationships, and ensures the speaker feels heard and valued.
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.