Answer:
12
Explanation:
as it is a square so it will have 4 identical sides
and area is length multiplied by width so you would find the square root of 144
![√(144 ) = 12](https://img.qammunity.org/2021/formulas/mathematics/high-school/5zo2kp31vgg2rer19pep9eaxtrrw01ana2.png)
then because area your only multiplying those two values and because a square is identical
all sides will be 12cm
![{12cm}^(2)](https://img.qammunity.org/2021/formulas/mathematics/high-school/thfbur5xmiicq2f9yr96kktebiek1vfcxr.png)