Answer:

5/6

Explanation:

Dimensions of cube=a,a,a

Dimensions of cuboid = a,a,2a

Surface area of cuboid =2(lb+bh+hl)

[tex]S_{cuboid}[/tex]=2(a²+2a²+2a²)=10a²

[tex]S_{cubes}[/tex]=6a²×2=12a²

S cuboid/ S cubes= 10a²/12a²=5/6

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