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[" (A) "10sqrt(3)quad " (B) "10sqrt(5)qu...

[" (A) "10sqrt(3)quad " (B) "10sqrt(5)quad " (C) "10sqrt(3)+(5 pi)/(3)quad " (D) "10+5 pi],[" Q.7"quad [" If a circle of constant radius "3" k passes through the origin 'O' and meets co-ordinate axes at A and B then the locus of the "],[" centroid of the triangle OAB is "],[(A)x^(2)+y^(2)=(2k)^(2)," (B) "x^(2)+y^(2)=(3k)^(2)quad (C)x^(2)+y^(2)=(4k)^(2)quad (D)x^(2)+y^(2)=(6k)^(2)]]

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If a circle of constant radius 3k passes through the origin O and meets the coordinate axes at AandB,then the locus of the centroud of triangle OAB is (a)x^(2)+y^(2)=(2k)^(2)(b)x^(2)+y^(2)=(3k)^(2)(c)x^(2)+y^(2)=(4k)^(2)(d)x^(2)+y^(2)=(6k)^(2)

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