Centroid of a Tetrahedron
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Q. A variable plane which remains at a constant distance p from the origin cuts the coordinate axes in A, B, C. The locus of the centroid of the tetrahedron OABC is y2z2+z2x2+x2y2=kx2y2z2, where k is equal to
- 9p2
- 9p2
- 7p2
- 16p2
Q.
If centroid of the tetrahedron OABC, where coordinates of A, B, C are (a, 2, 3), (1, b, 3) and (2, 1, c) respectively be (1, 2, 3), then find the distance of a point (a, b, c) from the origin, where O is the origin.
√50
√76
7
√75
Q. A variable plane which remains at a constant distance p from the origin cuts the coordinate axes in A, B, C. The locus of the centroid of the tetrahedron OABC is y2z2+z2x2+x2y2=kx2y2z2, where k is equal to
- 9p2
- 9p2
- 7p2
- 16p2
Q.
If centroid of the tetrahedron OABC, where A, B, C are given by (a, 2, 3), (1, b, 2) and (2, 1, c) respectively be (1, 2, -1), then distance of P(a, b, c) from origin is equal to
√107
√14
√10714
None of these
Q.
If a variable plane forms a tetrahedron of constant volume 64k3 with the co-ordinate planes, then the locus of the centroid of the tetrahedron is
xyz=k3
xyz=2k3
xyz=12k3
xyz=6k3