imo class 12 three dimensional geometry

The plane 3x−4y+12z=7 has normal vector of magnitude:

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The plane 3x−4y+12z=7 has normal vector of magnitude:

  • A. 13
  • B. 12
  • C. 7
  • D. 5

Answer: A) 13

Explanation: Magnitude=√(9+16+144)=√169=13.

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