Give me the way and the answer

The perimeter $P$ of a square is given by the formula $P = 4s$, where $s$ is the side length.
Given $P = 24 \text{ cm}$:

$$24 \text{ cm} = 4s$$

Divide by 4 to find $s$:

$$s = \frac{24 \text{ cm}}{4}$$ $$s = 6 \text{ cm}$$

The area $A$ of a square is given by the formula $A = s^2$.
Using the side length $s = 6 \text{ cm}$:

$$A = (6 \text{ cm})^2$$ $$A = 36 \text{ cm}^2$$

The area of the square is $36 \text{ cm}^2$.