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  4. The distance of the point (3, 4, 5) from X-axis is

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Q. The distance of the point (3, 4, 5) from X-axis is

Introduction to Three Dimensional Geometry

Solution:

The foot of perpendicular from (3, 4, 5) on X-axis is (3, 0, 0). Hence, the required distance
$ = \sqrt{(3 - 3)^2 + (4 - 0)^2 + (5 - 0)^2 } = \sqrt{41}$.