The area of a square with perimeter 48 cm, is :

Answer: Option A

Side of the square :
$$\begin{array}{rl}& =\left(\frac{48}{4}\right)cm\\ & =12cm\end{array}$$
Area of the square :
$$\begin{array}{rl}& =\left(12\times 12\right)c{m}^2\\ & =144c{m}^2\end{array}$$