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Q.
Distance of the point $(3,4,5)$ from the origin $(0,0,0)$ is
Introduction to Three Dimensional Geometry
Solution:
Distance between the points $(3,4,5)$ and $(0,0,0)$
$= \sqrt{\left(3-0\right)^{2}+\left(4-0\right)^{2}+\left(5-0\right)^{2}}$
$=\sqrt{9+16+25}$
$= \sqrt{50}=5\sqrt{2}$ units