What is the distance between $(–10, –2, 2)$ and $(–5, –1, 1)$ ?

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Answer 1 · 2016-09-06T17:02:49

The 3D distance formula is $sqrt[(x_2−x_1)^2+(y_2−y_1)^2+(z_2−z_1)^2]$

Substitute in to get
$sqrt[(-5- -10)^2 +(-1 - -2)^2 + (1-2)^2]$

$sqrt[5^2 +1^2 +(-1)^2]$

$sqrt(25+1+1)$

$sqrt27 = sqrt(9*3)$ = $3sqrt3$

What is the distance between (–10, –2, 2) (–10, –2, 2) and (–5, –1, 1) (–5, –1, 1) ?