Question 853883
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Hi,
Let h represent its height &#8658; b = (h-7)
A = {{{(1/2)bh = (1/2)(h-7)h = 697 in^2}}}   
              h^2 - 7h - 1394 = 0     Factor
              (h - 41)(x+34) = 0    (Tossing out the negative solution for unit measure)
                  h = 41 in