Question 926912
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Hi,
     *[illustration rectangle.png].
A = Lw
(w+6)w = 91 m^2
w^2 + 6w - 91 = 0 (tossing out negative solution for unit measure)
(w + 13)(w - 7) = 0
w = 7m, the width and  Length 13m {{{7 + 6}}}
And..checking 
Lw = 91 m^2