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  3. 11th Class
  4. Mental Ability
  5. Mensuration

11th Class Mental Ability Mensuration Question Bank Question - Mensuration

  • question_answer
    If the side of an equilateral triangle is 7 metres; its (in sq. m.) is:

    A) 19.2

    B) 21.22

    C) 20.4     

    D) 25

    E) None of these

    Correct Answer: B

    Solution :

    Explanation Option (b) is correct. Area = \[\frac{3}{4}\times {{7}^{2}}=21.22\,\,sq.\,m.\]


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