To find the perimeter of the square garden, we first need to determine the length of one side of the square.
The area of a square is given by the formula: \[ \text{Area} = \text{side}^2 \]
Given that the area is 256 m², we can find the length of a side by taking the square root: \[ \text{side} = \sqrt{256} = 16 , \text{m} \]
Now that we have the length of one side, we can calculate the perimeter of the square using the formula for the perimeter: \[ \text{Perimeter} = 4 \times \text{side} \] \[ \text{Perimeter} = 4 \times 16 , \text{m} = 64 , \text{m} \]
Thus, the perimeter of the garden is 64 meters.