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A square room has a 12-foot long wall. What is the floor area?

A. 24 sq. ft.
B. 48 sq. ft.
C. 140 sq. ft.
D. 144 sq. ft.


Sagot :

To determine the floor area of a square room, we follow these steps:

1. Identify the side length of the square room. In this case, the side length is given as 12 feet.
2. Use the formula for the area of a square, which is side length squared (side length × side length).
3. Calculate the area by squaring the side length:

[tex]\[ \text{Area} = 12 \, \text{feet} \times 12 \, \text{feet} = 144 \, \text{square feet} \][/tex]

Thus, the floor area of the square room is [tex]\(\boxed{144 \, \text{sq. ft.}}\)[/tex].

Therefore, the correct answer is:

D
144 sq. ft.