The distance of the point (9,12,5) from the x-axis is ___. Options: A . &nbsp 9 units B . &nbsp 13 units C . &nbsp 18 units D . &nbsp 21 units

Answer: Option B : B The distance of a point P(x,y,z) from the x-axis is d = √ y 2 + z 2 = √ 12 2 + 5 2 = √ 144 + 25 = √ 169 = 13 u n i t s

The distance of the point (9,12,5) from the x-axis is __

Question

The distance of the point (9,12,5) from the x-axis is ___.

Options:

A . 9 units

B . 13 units

C . 18 units

D . 21 units

Answer: Option B
:
B

The distance of a point P(x,y,z) from the x-axis is
$d = \sqrt{y^{2} + z^{2}} = \sqrt{12^{2} + 5^{2}} = \sqrt{144 + 25} = \sqrt{169} = 13 u n i t s$

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