# What is the distance between (-9,3,1) and (1,5,2)?

What is the distance between (-9,3,1) and (1,5,2)?
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Distance
$=\sqrt{{\left({x}_{2}-{x}_{1}\right)}^{2}+{\left({y}_{2}_{y}_{1}\right)}^{2}+{\left({z}_{2}-{z}_{1}\right)}^{2}}=\sqrt{{\left(1+9\right)}^{2}+{\left(5-3\right)}^{2}+{\left(2-1\right)}^{2}}=\sqrt{105}=10.25\left(2dp\right)$
$=\sqrt{{\left({x}_{2}-{x}_{1}\right)}^{2}+{\left({y}_{2}_{y}_{1}\right)}^{2}+{\left({z}_{2}-{z}_{1}\right)}^{2}}=\sqrt{{\left(1+9\right)}^{2}+{\left(5-3\right)}^{2}+{\left(2-1\right)}^{2}}=\sqrt{105}=10.25\left(2dp\right)$ units