Answer:
Each of the other side is 184 feet.
Explanation:
Given that:
Length of two sides each = 104 feet 
Total length of all sides = 576 feet 
Let, 
x be the length of other one side.
Length of other two sides will be 2x.
Total length of sides = 2x + 2(104)
576 = 2x + 208
2x = 576 -208 
2x = 368
Dividing both sides by 2 

Hence, 
Each of the other side is 184 feet.