Final answer:
The area of the construction site, which is a square with each side measuring 45 m, is calculated using the formula for the area of a square (side²) and equals 2025 m².
Step-by-step explanation:
To find the area of a construction site in the shape of a square, we use the formula for the area of a square, which is side × side or side². Since we're given that one side of the wooden wall is 45 m, we can calculate the area as follows:
Area = side² = 45 m × 45 m = 2025 m².
Therefore, the area of the construction site is 2025 m².
It's helpful to remember that units are squared when calculating area, consistent with the unit for a side, which is in meters. So the area should be expressed in square meters (m²).