The dimensions of a garden in the shape of a right triangle are measured in feet (ft). This diagram shows one dimension, in inches (in.), of a scale drawing of the garden and the scale used to create the drawing.

Scale drawing of right triangle with one leg labeled 9 inches. Key on drawing indicates scale is 2 inches is to 5 feet.

The area of the triangle in the scale drawing is 54 in.2.
The perimeter of the triangle in the scale drawing is 36 in.

What is the length, in feet, of the longest side of the actual garden?