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A straight rod of length 3l unit slides ...

A straight rod of length 3l unit slides with its ends A, B always on the x and y axes respectively. Then the locus of the centroid of `DeltaΟΑΒ` is

A

`x^(2)+y^(2)=3l^(2)`

B

`x^(2)+y^(2)=l^(2)`

C

`x^(2)+y^(2)=4l^(2)`

D

`x^(2)+y^(2)=2l^(2)`

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  13. The perimeter of triangle is 14 units and two of its vertices are (-3,...

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