Question
The equations of the sides AB, BC and CA of a triangle ABC are : $2x+y=0,x+py=21a,(a\pm0)$ and $x-y=3$ respectively. Let P(2, a) be the centroid of $\Delta$ABC. Then (BC)$^2$ is equal to ___________.
Correct Answer
122
The equations of the sides AB, BC and CA of a triangle ABC are : $2x+y=0,x+py=21a,(a\pm0)$ and $x-y=3$ respectively. Let P(2, a) be the centroid of $\Delta$ABC. Then (BC)$^2$ is equal to ___________.