The figure consists of,
Two rectangles of dimension 6 ft by 8 ft.
Two rectangles of dimension 8 ft by 10 ft.
Two rectangles of dimension 10 ft by 6 ft.
Determine the surface area of box.
[tex]\begin{gathered} A=2\times(6\cdot8)+2\times(8\cdot10)+2\times(10\cdot6) \\ =96+160+120 \\ =376 \end{gathered}[/tex]Thus, surface area of the box is 376 square feet.