If the length of a room is 20 feet and its width is 12 feet, what is the perimeter of the floor area?

To determine the perimeter of a rectangular room, the formula to use is:

Perimeter = 2 × (length + width)

In this case, the length of the room is 20 feet, and the width is 12 feet. Plugging those values into the formula gives:

Perimeter = 2 × (20 feet + 12 feet)

Perimeter = 2 × 32 feet

Perimeter = 64 feet

Thus, the perimeter of the floor area is 64 feet, which corresponds to the correct answer. This calculation is important for various practical applications, such as measuring the distance around a room for flooring or baseboard installation, which requires knowing the total length of the walls.