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NDA 2011
Exam
NDA
Year
2011
Subject
Mathematics
Chapter
Vector Algebra

NDA 2011 · Mathematics · Vector Algebra

What is the area of the triangle with vertices (1,2,3) , (2,5,-1)...

What is the area of the triangle with vertices (1,2,3)(1,2,3), (2,5,−1)(2,5,-1) and (−1,1,2)?(-1,1,2) ?

Options

  1. A1552\frac{\sqrt{155}}{2} square units
  2. B1752\frac{\sqrt{175}}{2} square units
  3. C1554\frac{\sqrt{155}}{4} square units
  4. D1754\frac{\sqrt{175}}{4} square units

Correct answer

A. 1552\frac{\sqrt{155}}{2} square units

Step-by-step solution

The correct answer is option A
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