Final answer:
To convert 13.5 yards to feet, multiply by the conversion factor 3 feet = 1 yard. The length in feet is 40.5 feet.
Step-by-step explanation:
To convert from yards to feet, we can use the conversion factor 3 feet = 1 yard. In this case, the legal description states the boundary is 13.5 yards long. We can multiply this by the conversion factor to find the equivalent length in feet:
13.5 yards Ă— 3 feet/1 yard = 40.5 feet
Therefore, the boundary described as 13.5 yards long is equivalent to 40.5 feet.