Answer:
[tex]240cm^2[/tex]
Step-by-step explanation:
The area of the rectangular face with dimension 8 by 8 is [tex]8*8=64cm^2[/tex]
The area of the rectangular face with dimension 10 by 8 is [tex]10*8=80cm^2[/tex]
The area of the rectangular face with dimension 6 by 8 is [tex]6*8=48cm^2[/tex]
The area of the two rectangular faces is [tex]2*\frac{1}{2}*8*6=48cm^2[/tex]
The total surface area is [tex]64+80+48+48=240cm^2[/tex]
