In ΔABC, D is the midpoint of BC and G is the centroid. If GD = 10 cm, then the length
of AD is _________.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 30 cm.
In a triangle, the centroid (G) divides the median (AD) in the ratio 2 : 1 = 2x : 1x
According to the question,
⇒ 1x = 10
Length od AD = 2x + 1x = 3x = 30 cm