9th Class Mathematics Heron's Formula Question Bank Heron's Formula

  • question_answer
    One side of an equilateral triangle is 8 cm. What is its area?

    A) \[12\sqrt{3}\,c{{m}^{2}}\]       

    B)   \[16\sqrt{3}\,c{{m}^{2}}\]       

    C) \[8\sqrt{3}\,c{{m}^{2}}\]        

    D)   \[48\sqrt{3}\,c{{m}^{2}}\]                   

    Correct Answer: B

    Solution :

    If 8 cm is the length of a side of an equilateral triangle then its area is \[=\frac{\sqrt{3}}{4}\times {{(8)}^{2}}=16\sqrt{3}\,c{{m}^{2}}\]


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