Question
If the origin is the centroid of triangle PQR, with vertices P(2a, 2, 6), Q(- 4, 3b, - 10) and R(8, 14, 2c). Find the values of a, b and c.
Solution
Here A (2a, 2, 6), B (-4, 3b, -10) and C (8, 14, 2c) be the given vertices of a
∴ Centroid of is
But, centroid is given to be (0, 0, 0)
∴
Also,
and
Hence,