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

  • question_answer
    Find the height of the right angled triangle whose area is \[\mathbf{30}\text{ }\mathbf{c}{{\mathbf{m}}^{\mathbf{2}}}\] and base is 5 cm.

    A) 20 cm                 

    B)       10 cm

    C) 12 cm    

    D)       40 cm

    E) None of these

    Correct Answer: C

    Solution :

    Explanation Option [c] is correct. According to the question \[30=\frac{1}{2}\times 5\times h\Rightarrow 30=\frac{5h}{2}\] \[\Rightarrow 60=5h\Rightarrow h=\frac{60}{5}=12cm.\]            


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