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6th Class Mental Ability Related to Competitive Exam Question Bank Geometry

  • question_answer
    Area of a triangle is \[\mathbf{20}\text{ }\mathbf{c}{{\mathbf{m}}^{\mathbf{2}}}\]and base is 20 cm. Find the height of the triangle.

    A) \[2\,cm\]

    B)                    \[8\,cm\]

    C) \[5\,cm\]                   

    D)                    \[6\,cm\]

    E) None of these

    Correct Answer: A

    Solution :

    Explanation Option [a] is correct. Let the height of the triangle is x. According to the question \[20=\frac{1}{2}\times 20\times x\Rightarrow 20=10x\Rightarrow x=\frac{20}{10}=2cm.\] Hence, the height of the triangle = 2 cm.


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