Dorothy wants to build a triangular garden next to her house to go with her circular pool and trapezoidal deck. Her octagonal patio furniture is still on back order. The farthest the garden will extend from her house is 40 feet. One edge of the garden will be along the side of her house, which is L feet long. If Dorothy puts fencing along the other two edges of the garden, the ones that aren't the side of her house, how many feet of fencing will she need? Your answer may have L in it.