dont u find the perimeter of the base of the pool..then times by 1.1?? because if u 'unravelled' the pool, the length would end up being the perimeter......
omg, i did exactli the same thing...cuz i waz rushing it, n i knew if i actuali thot about it id take too long as time waz ticking
but yeh...omg, it wasn't that hard in the end...whoopZ