ANSWER:
5.65 ft²
STEP-BY-STEP EXPLANATION:
We have the following measures:
Length (l) = 13 inches
Width (w) = 11 inches
Height (h) = 11 inches
We can determine the surface area as follows:
[tex]\begin{gathered} A=2\cdot l\cdot w+2\cdot l\cdot h+2\cdot w\cdot h \\ \\ \text{ We replacing:} \\ \\ A=2(13)(11)+2(13)(11)+2(11)(11) \\ \\ A=286+286+242 \\ \\ A=814\text{ in}^2 \\ \\ \text{ Convert inches to feet, knowing that 1 foot is equal to 12 inches} \\ \\ A=814\text{ in}^2\cdot\frac{(1\text{ ft\rparen}^2}{(12\text{ in\rparen}^2} \\ \\ A=5.65\text{ ft}^2 \end{gathered}[/tex]
Therefore, the correct answer is 5.65 ft²