Stress management is vital for maintaining mental and physical health. It helps in improving focus, productivity, and decision-making abilities. Proper stress management techniques, such as relaxation exercises, time management, and mindfulness, reduce anxiety and enhance overall well-being.
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.