The area of the square is 9 square centimeters (cm²)
The area of the square with sides of length 3 cm is calculated by multiplying the length of one side by itself, since all sides of a square are equal. Therefore, the area of the square is:
Area = Side × Side
Area = 3 cm × 3 cm
Area = 9 cm²
So, the area of the square is 9 square centimeters (cm²)