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Question
Find the distance of the point (2, 3, 4) from the x-axis.
Solution
\[\text{ A general point (x, y, z) is at a distance of } \sqrt{y^2 + z^2} \text{ from the x - axis } . \]
\[ \therefore \text{ Distace of the point (2, 3, 4) from x - axis } = \sqrt{3^2 + 4^2} = \sqrt{25} = 5 \text{ units } \]
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