Two walls

Calculate the surface area of a cube in m2 if you know that the area of its two walls is 72 dm2.

Correct result:

S =  2.16 m2

Solution:

S2=72 dm2 S6=3 S2=3 72=216 dm2  S=S6 m2=S6/100  m2=216/100  m2=2.16 m2=5425 m2



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