Answer:
4.24 inches
Explanation:
We know from the problem that A=s^2, simply take the square root of both sides to find the equation for a sides:
![s=√(A)](https://img.qammunity.org/2023/formulas/mathematics/high-school/ek6a4qbm9g33py1zha5w5vvr46q70iybgm.png)
Now that we have the formula for a side, substitute A with the area (18):
![s=√(18)](https://img.qammunity.org/2023/formulas/mathematics/high-school/ce9sdxa9c9xypln5giuxuky1oytghuxjrt.png)
Evaluate with a calculator:
![s=4.24264068712](https://img.qammunity.org/2023/formulas/mathematics/high-school/r40drsb5tw92ddgz186jli2kio54hnavnx.png)
Round to 2 decimal places as per the problem:
![s=4.24](https://img.qammunity.org/2023/formulas/mathematics/high-school/xwpdbg49ybyitrzig4hpphbvoam3yj00cv.png)
Units for a side will not be squared or cubic, they are simply just inches.