Distance between (6,8,2) and (3,4,1)?

Distance between (6,8,2) and (3,4,1)?
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Distance between 2 points $\left({x}_{1},{y}_{1},{z}_{1}\right)$ and $\left({x}_{2},{y}_{2},{z}_{2}\right)$
$\text{XXX}=\sqrt{\Delta {x}^{2}+\Delta {y}^{2}+\Delta {z}^{2}}=\sqrt{{\left({x}_{1}-{x}_{2}\right)}^{2}+{\left({y}_{1}-{y}_{2}\right)}^{2}+{\left({z}_{1}-{z}_{2}\right)}^{2}}$
For the given points (6,8,2) and (3,4,1)
Distance
$\text{XXX}=\sqrt{{\left(6-3\right)}^{2}+{\left(8-4\right)}^{2}+{\left(2-1\right)}^{2}}$
$\text{XXX}=\sqrt{9+16+1}$
$\text{XXX}=\sqrt{26}$
$\text{XXX}\cong 5.099019514$