The cube

The cube has a surface area of 216 dm2. Calculate:
a) the content of one wall,
b) edge length,
c) cube volume.

Correct result:

S1 =  36 dm2
a =  6 dm
V =  216 dm3

Solution:

S=216 dm2  S1=S/6=216/6=36 dm2
S1=a2  a=S1=36=6 dm
V=a3=63=216 dm3

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