Answer:
[tex]864\ in^{2}[/tex]
Step-by-step explanation:
The figure is a cube
The surface area of a cube is equal to
[tex]S=6b^{2}[/tex]
where
b is the length side of the cube
In this problem we have
[tex]b=12\ in[/tex]
substitute
[tex]S=6(12^{2})=864\ in^{2}[/tex]
