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Length of Space Diagonal

Practice problem

Length of Space Diagonal

By PPo-Shen Loh

Suppose that a cube has side length $x$ . What's the distance between two opposite corners of the cube?

Choose one answer

Option A: A

$x$

Option B: B

$x \sqrt{2}$

Option C: C

$x \sqrt{3}$

Option D: D

$2x$

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