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9th Class Mathematics Coordinate Geometry Question Bank Co-ordinate Geometry

  • question_answer
    In the given figure Area of \[\Delta \mathbf{ABC}\]

    A)  3 unit                        

    B)  \[4\frac{1}{2}\]unit

    C)  \[1\frac{1}{2}\] unit       

    D)  1 unit

    Correct Answer: C

    Solution :

    (c): Required area \[=\Delta OAC-AOAB\] \[=\frac{1}{2}\times 3\times 3-\frac{1}{2}\times 3\times 2\] \[=\frac{9}{2}-\frac{6}{2}=\frac{3}{2}\] \[=1\frac{1}{2}\]units            


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