Correct Answer:
(a) Capital Expenditure
(b) Revenue Expenditure
(c) Capital Expenditure
Solution:
1. Installation of a new machine: This is Capital Expenditure as it creates a new fixed asset providing long-term benefits.
2. Repairs due to negligence: This is Revenue Expenditure as it is recurring and does not create a new asset.
3. Air-conditioning for the office: This is Capital Expenditure as it improves the value and functionality of the office.
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.
