2010008704

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2010008704
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1
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A cube ABCDEFGH with an edge length of 3 is placed in a coordinate system (see the picture). Find the distance between parallel planes ρ and σ, where ρ is passing through D, E and G and σ is passing through A, C and F.
|ρσ|=3
|ρσ|=233
|ρσ|=332
|ρσ|=433