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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    The area of the triangle whose vertices are (1, 2, 3), (2, 5, -1) and (-1, 1, 2) is:

    A)  150 sq unit        

    B)                         145 sq unit

    C)                         \[\frac{\sqrt{155}}{2}\]sq unit                  

    D)                         \[\frac{155}{2}\]sq unit

    E)                         \[\frac{\sqrt{165}}{2}\]sq unit

    Correct Answer: C

    Solution :

    The area of triangle whose vertices are (1, 2, 3),\[(2,5,-1)\]and\[(-1,1,2)\]is\[\frac{\sqrt{155}}{2}\]sq unit.


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