Question
If centroid of the tetrahedron , whose vertices are given by (0,0,0), (a, 2, 3),(1, b, 2) and (2, 1, c) be (1, 2, –1), then distance of P(a,b,c) from origin is equal to
Answer: Option A
:
A
Centroid ≡(∑x4,∑y4,∑z4)=(1,2,−1)
⇒a=1,b=5,c=−9;∴√a2+b2+c2=√107.
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:
A
Centroid ≡(∑x4,∑y4,∑z4)=(1,2,−1)
⇒a=1,b=5,c=−9;∴√a2+b2+c2=√107.
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