When the sides are the same legnth, that is max area (I can find the max area with calculus but I don't think you know that) so if we assume that they are equal L=W 376=perimiter P=2(L+W) 376=2(L+W) 376=2(L+L) 376=2(2L) 376=4L divide both sides by 4 94=L
the dimeintions are 94 by 94, if we mulipy we get 8836ft
C is answer
(note: for those people who say rectangles have to have different side legnths, that is incorrect because the requirement is 4 right angles, all squares are recangles, but not all rectangles are squares)