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The length of foot of perpendicular drawn from the point $P (- 3, - 4, 5)$ on $y - a x i s$

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Correct option is B

We know that, in the y-axis, x=0 and z=0Thus, foot of perpendicular from P on y-axis is A(0,4,0).∴ PA=(0-3)2 + (4-4)2+ (0-5)2 =9+0+25=34

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The length of foot of perpendicular drawn from the point P(-3,-4,5) on y-axis

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The length of foot of perpendicular drawn from the point $P (- 3, - 4, 5)$ on $y - a x i s$