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NDA 2011
Exam
NDA
Year
2011
Subject
Mathematics
Chapter
Three Dimensional Geometry

NDA 2011 · Mathematics · Three Dimensional Geometry

What is the radius of the sphere x^2+y^2+z^2-x-y-z=0 ?

What is the radius of the sphere x2+y2+z2−x−y−z=0x^2+y^2+z^2-x-y-z=0 ?

Options

  1. A34\sqrt{\frac{3}{4}}
  2. B12\sqrt{\frac{1}{2}}
  3. C32\sqrt{\frac{3}{2}}
  4. D13\frac{1}{3}

Correct answer

A. 34\sqrt{\frac{3}{4}}

Step-by-step solution

The correct answer is option (A).
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