What is the total square footage for the subfloor of a building measuring 24' wide by 64' long?

To find the total square footage of the subfloor for the building, you multiply the width by the length. In this case, the building measures 24 feet in width and 64 feet in length.

The calculation is as follows:

24 feet (width) × 64 feet (length) = 1536 square feet.

Thus, the total square footage of the subfloor is 1536 square feet, making that the correct choice. This straightforward multiplication is essential in carpentry for determining material requirements, understanding space utilization, and ensuring accurate construction.