Answer:
Length = x feet = 104 feet
Explanation:
Perimeter of a rectangle = 2(length + width)
Length = x feet
Width = 102 feet
Perimeter of a rectangle = 412 feet
Perimeter of a rectangle = 2(length + width)
412 = 2(x + 102)
412 = 2x + 204
412 - 204 = 2x
208 = 2x
x = 208/2
x = 104 feet