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5 answers

If it's a cube, all sides have to be squares.

If the surface area of one side is 1, then the the length of each edge is also 1.

Then, the diagonal of a side would be √(1² + 1²) = √2

And, not sure if this is what you're asking, a diagonal connecting one corner of the cube to the opposite corner would have the diagonal of one side as a base, and an edge as the other side, so it would have length √(1+2) = √3

2006-11-24 14:16:14 · answer #1 · answered by Jim Burnell 6 · 0 0

The area of each side is 1, so
A = s²
s² = 1
s = 1

The side measures 1. The diagonal measures
d = s√3

Therefore,
d = √3

^_^

2006-11-24 23:19:16 · answer #2 · answered by kevin! 5 · 0 0

Take the cube and set one vertex on the origin in the first octant.
You can draw a vector from the origin to the point (1,1,1) this is the diagonal.

By pythagoreans theorem the length of a vector is sqrt(x^2+y^2+z^2).

so this vector is sqrt(3)

2006-11-24 22:16:21 · answer #3 · answered by dibujojoe 2 · 0 0

diagonal = √(3)*s
= √(3s²)
= √3 as s² = 1

2006-11-24 22:15:38 · answer #4 · answered by Wal C 6 · 0 0

2^1/2
Cube w/ surface 1sq side ea. edge =1
Apply Pythagorean theorem

2006-11-24 22:19:05 · answer #5 · answered by Sophist 7 · 0 0

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