What do the removal of carpet and the replacement of carpet pad have in common?

The removal of carpet and the replacement of carpet pad are both calculated using actual square footage because both processes involve measuring the area of the floor that is being worked on. The calculation based on square footage ensures that estimations are accurate and reflective of the actual space involved, allowing for precise material requirements and labor costs.

Using actual square footage as a basis for calculation helps in evaluating the total amount of carpet needed and the corresponding pad, ensuring the estimates align with the dimensions of the rooms undergoing work. This method is standard in flooring jobs, making it critical for accurate cost assessments in the estimatics process.

In this context, the other options do not align with the processes involved. For instance, the removal of carpet typically doesn't require padding, and labor costs may differ depending on specific tasks rather than being constant across both actions.