Distance between $(1, 2, 3)$ and $(4, 6, 3)$ is:
A$9$
B$7$
C$5$
D$25$
Answer & Solution
Correct answer: C. $5$
$\sqrt{(4-1)^2 + (6-2)^2 + 0^2} = \sqrt{9 + 16} = 5$.
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