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The equation of a circle with origin as ...

The equation of a circle with origin as centre and passing through the vertices of an equilateral triangle whose median is of length 3a is

A

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

B

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

C

`x^(2) + y^(2) =9a^(2)`

D

None of these

Text Solution

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The correct Answer is:
B
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