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JEE Main2013MathematicsThree Dimensional GeometryActual

If the projections of a line segment on the x, y and z -axes in 3-dimensional space are 2, 3 and 6 respectively, then the length of the line segment is :

Options

  1. A12
  2. B7
  3. C9
  4. D6

Correct answer

B. 7

Step-by-step solution

Length of the line segment = (2)^2+(3)^2+(6)^2 =7

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