Respuesta :

For a rectangle:
[tex]A = w*l [/tex]
Since A = 864, and W = 2/3L:
[tex]W = \frac{2}{3}L [/tex]
[tex]864=L* \frac{2}{3}L [/tex]
[tex]864 = \frac{2}{3}L^{2} [/tex]
[tex]1296=L^{2}[/tex]
[tex] \sqrt{L^{2}} = L = 36 [/tex]
Hope that helps! :)

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