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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)=9 a^(2)`

B

`x^(2)+y^(2)=16 a^(2)`

C

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

D

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

Text Solution

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The correct Answer is:
C
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