Mark against the A. (2, 3, 4)

B. (6, 4, 3)

C.

D. None of these

Given: The plane 2x + 3y + 4z = 12 meets coordinate axes at A, B and C.

To find: Centroid of ∆ABC

Formula Used: Equation of plane is where (x, y, z) is a point on the plane and a, b, c are intercepts on x-axis, y-axis and z-axis respectively.

Centroid of a triangle

Explanation:

Equation of given plane is 2x + 3y + 4z = 12

Dividing by 12,

Therefore the intercepts on x, y and z-axis are 6, 6 and 3 respectively.

So, the vertices of ∆ABC are (6, 0, 0), (0, 4, 0) and (0, 0, 3)

Centroid

= (2, 4/3, 1)

Therefore, the centroid of ∆ABC is (2, 4/3, 1)