Answer: the length of the shortest side is 15ft.
the length of the shorter or third side is 18ft
the length of the longest side is 26ft
Step-by-step explanation:
Let x represent the length of the shortest side of the triangular section.
Let y represent the length of the third or shorter side of the triangular section.
Let z represent the length of the longest side of the triangular section.
The perimeter of the triangular section is 59 ft. It means that
x + y + z = 59 - - - - - - - - - -1
the longest side of a triangular section is 4 ft shorter than twice the shorter side. It means that
z = 2x - 4
the third side is 3 feet longer than the shortest side. It means that
y = x + 3
Substituting z = 2x - 4 and y = x + 3 into equation 1, it becomes
x + x + 3 + 2x - 4 = 59
4x - 1 = 59
4x = 59 + 1 = 60
x = 60/4 = 15ft
y = x + 3 = 15 + 3
y = 18 ft
z = 2x - 4 = 2 × 15 - 4
z = 26