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    Question

    If median AD of an equilateral ∆ABC is 21 cm and G is

    centroid. Find GD?
    A 7cm Correct Answer Incorrect Answer
    B 4cm Correct Answer Incorrect Answer
    C 3cm Correct Answer Incorrect Answer
    D 5cm Correct Answer Incorrect Answer

    Solution

    Meeting point of all medians is called as centroid. Always remember that centroid divided median in 2:1 So here AG: GD = 2:1 & AD = 21 cm So dividing 21 into 2:1 , GD = 1/3 of AD = 1/3 of  21 = 7 cm  

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