Question 1138968
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Height + Width + Height = 28


H      + W     + H      = 28


(W-4)  + W     + (W-4)  = 28


3W - 8 = 28


3W = 28 + 8 = 36


W = 12


<U>ANSWER</U>.  Width is 12 ft;  Height is  12-4 = 8 ft.
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Solved.