Let the volume of tetrahedron ABCD is 81 cubic units and G1, G2, G3 are centroids of triangular faces ABC,ABD and ACD respectively, then volume of tetrahedron AG1G2G3 is -
A
3
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B
6
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C
814
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D
54
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Solution
The correct option is D54 Let A(→0), B(→a), C(→b), D(→c)