In SMART goals, ’R’ stands for ’Realistic,’ meaning that the goal should be attainable and within reach, considering available resources and constraints. This helps ensure that the goal is achievable.
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.