A square has all 4 sides equal, so divide the amount of fence available by 4 to get the length of one side of the square
600/4 = 150
Now since the creek is being used for one side, add one side of the square to the other side to get a rectagle 150 by 300 feet.
Area = 150 x 300 = 45,000 square feet.
3/11 as a decimal is .27 repeating that means it has a line over the two and the seven but if you want to round it would be .3
So the bigger number are the smallest
And
The small number are biggest
So it would be 1/6,2/3,3/4,5/8,7/12