Assuming the 20x20 area is enclosed, it's very convenient that the diagonal is 28 feet.
Lay two diagonals, and then cut off each corner with a 4'fence. That gives 12 enclosures, 8 of which are quite small.
If the area is unbounded, there's no reason to specify that it's 20x20.
you have a 20 x 20 area and you have 4 14 foot fences plus 4 4 foot fences and you need to house 9 dogs and none can be together how do you do it?
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