- Assertion (A): Adolescents tend to prioritize their peer group and friends during this stage of life, which is characterized by a strong need for social acceptance. This is a true statement, as peer relationships become more important during adolescence.
- Reason (R): While adolescents are encouraged to behave courteously towards their parents, it does not directly explain the assertion regarding their focus on peers. Adolescents may still prioritize their friends despite their respect for parents, so Reason (R) is true, but it doesn’t explain Assertion (A).
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.