The centroid of an equilateral triangle PQR is L. If PQ = 6 cm, the length of PL is: 

Equilateral triangle $$\triangle ABC$$ .

L is the centroid. 

In an equilateral triangle.

height of the triangle = $$\frac{ \sqrt{3}}{2}\times { \text{side}^2}$$ 

ratio of length of the centroid = 2 : 1 

Solution: ​

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