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NDA2015MathematicsThree Dimensional GeometryActual

A point P(1,2,3) is one vertex of a cuboid formed by the coordinate planes and the planes passing through P and parallel to the coordinate planes. What is the length of one of the diagonals of the cuboid?

Options

  1. A10 units
  2. B14 units
  3. C4 units
  4. D5 units

Correct answer

B. 14 units

Step-by-step solution

Length of one of the diagonal of cube aligned & = (1)^2+(2)^2+(3)^2 & = 1+4+9 = 14 units aligned Option (B) is correct.

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