How many square feet of carpeting are needed to carpet a 12-foot × 12-foot room?

• A. 24
• B. 120
• C. 48
• D. 144

Answer: (D)

To determine how many square feet of carpeting are needed for a 12-foot by 12-foot room, you need to calculate the area of the room. The area of a rectangle is calculated by multiplying its length by its width.

Here, both the length and the width of the room are 12 feet. Therefore, the calculation is:

Area = Length × Width

Area = 12 feet × 12 feet

Area = 144 square feet

This calculation shows that the total area of the room, and thus the amount of carpeting required to cover it completely, is 144 square feet. Hence, the correct answer is 144 square feet.