Answer:
[tex]\Large \boxed{\sf 136 \ m^2}[/tex]
Step-by-step explanation:
Surface area of this shape = area of 2 triangles + area of 3 rectangles
[tex](6 \times 4 \times 0.5 \times 2 )+(7 \times 5 \times 2+7 \times 6)=136[/tex]
