Find the centroid of the tetrahedron whose vertices are (2,3,-4) (-3,3,-2),(-1,4,2), (3,5,1)

The centroid of the tetrahedron whose vertices are (4,1,-2), (-3,3,-4),(-3,2,1),(4,2,3)

Find the volume of the tetrahedron, whose vertices are (1,2,1), (3,2,5),(2,-1,0),(-1,0,1) .

Find the centroid of the triangle whose vertices are (5,4,6),(1,-1,3) and (4, 3, 2).

Find the centroid of the triange whose vertices are given below (1,0),(-3,-3),(-4,-3)

Find the centroid of the triangle whose vertices are given below. (-1,4),(5,2),(-1,3)

Find the volume of the tetrahedron, whose vertices are (1,2,1),(3,2,5) , (2,-1,0) and (-1,0,1).

Find the centroid of the triangle whose vertices are given below. (2,8),(7,3),(-1,-1)

If the centroid of the tetrahedron is (0,-1,5/2) and three vertices are (-2,3,4), (3,-4,2),(2,-5,1) then the fourth vertex is