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The perpendicular distance from the orig...

The perpendicular distance from the origin to the plane through the point (2,3,-1) and perpendicular to the vector `3hati-4hatj+7hatk` is

A

`13/(sqrt(74))`

B

`(-13)/(sqrt(74))`

C

`13`

D

none of these

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The correct Answer is:
A
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