Question

The distance of the point (-2,5,4) from the Z-axis is units.

• A. $2\sqrt{5}$
• B. $\sqrt{41}$
• C. 5
• D. $\sqrt{29}$

Answer 1

The correct option is D $\sqrt{29}$

We know that, the distance of a point P(x,y,z) from Z-axis is $\sqrt{x^2+y^2}$.
Hence, the distance of the given point from the Z-axis is:
$\sqrt{{(-2)}^2+5^2}=\sqrt{29}$