Answer:
Surface area of the box is [tex]=671.48m^2[/tex]
Step-by-step explanation:
The box is in the shape of a cuboid:
Surface area of the cuboid = 2(L*W+W*H+H*L)
Length(L)=20.1 m
Width(W)=6.8 m
Height(H)=7.4 m
Surface area:
[tex]2((20.1*6.8)+(6.8*7.4)+(7.4*20.1))\\\\=2(136.68+50.32+148.74)\\\\=2(335.74)\\\\\=671.48m^2\\\\[/tex]
The surface area of the box is [tex]=671.48m^2[/tex]