document.write( "Question 1194978: Show the diagonal of a cube of edge e is square root of 3 multiply by e.
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Algebra.Com's Answer #827282 by math_helper(2461) $\"\"$ $\"About$

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document.write( "Pick two corners, at opposite ends of a diagonal on any one face:
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document.write( "Diagnoal length of one side:  \r
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document.write( "Now take that diagonal and make a right triangle using any point from the
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document.write( "opposite face (i.e. the face that shares no verticies with the face chosen above).   The hypotenuse of this triangle coincides with one of the four (main) diagonals of the cube (which all have the same length), and has length:    
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