Which of the following lines is a line of symmetry on the figure below?

Step 1: Calculate the perimeter of the garden.
The garden is a rectangle with length $L = 57\, \text{m}$ and width $W = 36\, \text{m}$.
The length of wire required to fence the garden is its perimeter.
The formula for the perimeter of a rectangle is $P = 2 \times (L + W)$.

$$P = 2 \times (57\, \text{m} + 36\, \text{m})$$ $$P = 2 \times (93\, \text{m})$$ $$P = 186\, \text{m}$$

The length of wire required is $186\, \text{m}$.

The final answer