Question 125
In $$\triangle$$ABC, D is the mid-point of BC and G is the centroid. If GD = 5 cm, then the length of AD is:
Solution
Given : G is the centroid of $$\triangle$$ ABC and GD = 5 cm
To find : AD = ?
Solution : A centroid divides a median in the ratio 2 : 1
=> $$AG:GD=2:1$$
=> $$AG=\frac{2}{1}\times5=10$$ cm
$$\therefore$$ AD = AG + GD
= $$10+5=15$$ cm
=> Ans - (C)
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