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What is the distance between (2, -1, 3) and (-2, 1, 3)?
A2 root 3
B4 root 2
Croot 10
D2 root 5
Answer & Solution
Correct answer: D. 2 root 5
The z-coordinates match, leaving 16 + 4 = 20, so the distance is 2 root 5.
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