Cleave Books
The Cubes Calculator
Show values to . . . significant figures.
space diagonalunits
surface areasquare units
volumecubic units

Remember: Appropriate units need to be attached.
Very large and very small numbers appear in e-Format.
Unvalued zeros on all numbers have been suppressed.
Display of original input has NOT been adjusted in any way.
A note on Format and Accuracy is available.

Additional Information
A Cube has 6 faces, all being squares of the same size.
It has 8 vertices (corners) and 12 edges.
It has 4 'space diagonals', all the same length.
A 'space diagonal' is a straight line joining two opposite vertices which do not belong to the same face. (If they do belong to the same face, it is a 'face diagonal'.)

With this shape it is only necessary to know one of its dimensions, and all the others can be derived from that.
Where (for brevity) it says 'edge', 'space diagonal' and so on, it should, more correctly, be something like 'size of edge' or 'edge-length' etc.

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Version 1.4