The area of the square of side 12 cm is _______ .

Options

A. 144 cm
B. 144 sq.cm
C. 48 cm
D. 48 sq. cm

Answer

To find the area of a square with a side length of 12 cm, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the formula for the area of a square**:
The area \( A \) of a square is calculated using the formula:
\[ A = \text{side}^2 \]

2. **Substitute the given side length into the formula**:
Here, the side length is given as 12 cm. We substitute this value into the formula:
\[ A = 12^2 \]

3. **Calculate the square of the side length**:
Now, we calculate \( 12^2 \):
\[ 12^2 = 144 \]

4. **State the unit of area**:
Since the side length is in centimeters, the area will be in square centimeters. Therefore, we write:
\[ A = 144 \, \text{cm}^2 \]

### Final Answer:
The area of the square of side 12 cm is **144 cm²**.