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Questions  

The distance between the origin and the centroid of the tetrahedron whose vertices are (0,0,0), (a,0,0), (0,b,0), (0,0,c) is

a
a2+b2+c2
b
a2+b2+c22
c
a2+b2+c24
d
4a2+b2+c2

detailed solution

Correct option is C

Centroid of the tetrahedron G=a4,b4,c4.∴OG=a2+b2+c24

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