Cube wall

The surface of the first cube wall is 64 m2. The second cube area is 40% of the surface of the first cube. Determine the length of the edge of the second cube (x).

Correct answer:

x =  2.0656 m

Step-by-step explanation:

S1=64 m2 q=40%=40100=0.4  S2=q S1=0.4 64=1285=25.6 m2  S2=6 x2  x=S2/6=25.6/6=2.0656 m

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