The perimeter (P)Â of the rectangle is the sum of twice is length (L) and twice its width (W),Â
                    P = 2L + 2W
Substituting the known values, with either of the givens being length and width,
                   P = 2 x 84 ft + 2 x 50 ft = 268 ft
Thus, the answer is letter A. 268 feet.Â
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