Well first off I approached the problem by trying to divide it into as little pieces as possible and then see what the lengths are. The total area I got for the oil spill was 31,727.25 Sq. Miles. What I got for an answer is pretty specific but if you broke it down really far you could divide it into a thousand shapes and then maybe get the true exact answer. Defiantly less than the real spill, the oil probably goes underwater a little bit and I think with an oil spill, you really can't get get the whole %100 exact answer but you can defiantly come close.