SOLUTION: What is the distance between (3, 2, 1) and (12, -2, 8)?

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Question 879390: What is the distance between (3, 2, 1) and (12, -2, 8)?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The distance formula can be extended to three dimensions with no obstacles.

Using symbols to be more accurate, you can use, for three dimensions,
.