Respuesta :

You would have to do 18x2 then 14x2.

Answer:

Step-by-step explanation:

Surface area = [tex]lw+l\sqrt{(\frac{w}{2})^2+h^2}+w\sqrt{(\frac{l}{2})^2+h^2}[/tex]

just put the values in the formula h=18,w=14,l=14

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