Answer:
 14.3 yards
Step-by-step explanation:
You want the perimeter of the right triangle with hypotenuse 6 yards and one leg 5 yards.
Missing leg
The other leg of the right triangle can be found using the Pythagorean theorem:
 a² +b² = c²
 b² = c² -a²
 b = √(c² -a²) = √(6² -5²) = √11 ≈ 3.3
The perimeter is ...
 P = a + b + c
 P = 5 + 3.3 + 6 = 14.3 . . . . yards
The perimeter of the triangle is about 14.3 yards.
