First, you would need to create an equation for this problem.
10 ft ÷ 6
Now, all you would have to do is solve it.
10 ft ÷ 6 = 1.66666666667 ft
The longest each leg can be is 1.66666666667 ft.
But, if you want it rounded to the nearest foot, each leg would be 1 ft long.
I hope this helps!