AD is the median of ∆ ABC. If O is the centroid and

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AD is the median of ∆ ABC. If O is the centroid and AO = 10 cm, then OD is

1. 5 cm
2. 20 cm
3. 10 cm
4. 30 cm

Correct Option: A

We draw a figure triangle ABC whose the side AD is the median and O is the centroid ,

Here , AO = 10 cm
Point O, is the centroid of ∆ ABC.
AO : OD = 2 : 1

⇒	10	=	2	⇒ 2 × OD = 10
	OD		1

⇒ OD =	10	= 5 cm.
	2