What is the total square footage of the living room that measures 25' x 45'?

To calculate the total square footage of a rectangular space, you multiply the length by the width. In this case, the living room measures 25 feet in width and 45 feet in length.

The calculation would be:

25 feet (width) x 45 feet (length) = 1,125 square feet.

Thus, the total square footage of the living room is indeed 1,125 square feet. This makes the first option the correct choice.

Understanding this process is crucial in real estate appraisal, as accurate square footage measurements are essential for property valuation and comparison with similar properties.