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The equation of circle concentric with c...

The equation of circle concentric with circle `x^2+y^2-6x+ 12y+ 15=0` and double its area is

A

`x^(2)+y^(2)-6x+12y-15=0`

B

`x^(2)+y^(2)-6x-12y+15=0`

C

`x^(2)+y^(2)-6x+12y+15=0`

D

None of these

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The correct Answer is:
A
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BITSAT GUIDE-THE CIRCLE -BITSAT ARCHIVES
  1. The equation of circle concentric with circle x^2+y^2-6x+ 12y+ 15=0 an...

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  2. If the equation of circle which passes through the origin and cuts off...

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  3. Find the equation of the circle circumscribing the triangle formed by ...

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  4. The length of tangent from (5,1) to the circle x^(2)+y^(2)+6x-4y-3=0 ...

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  5. Find the angle between the two tangents from the origin to the circle ...

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  6. If a circle passes through (0,0) and (a,0) and (0,b), then the coordin...

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  7. If the sum of the distance of a point P from two perpendicular lines i...

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  8. If the lines 2x-3y=5and3x-4y=7 are two diameters of a circle of radius...

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  9. Find the radius of the circle with the polar equation r^2-8r(sqrt3cost...

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  10. The centre of circle whose normals are x^(2)-2xy-3x+6y=0 is

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  11. The centres of a set of circles, each of radius 3, lie on the circle x...

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  12. If the two circles x^(2)+y^(2)-2x+22y+5=0andx^(2)+y^(2)+14x+6y+k=0 int...

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  13. The radius of the ciclle x^(2)+y^(2)+4x+6y+13=0 is

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  14. The centre of the circles x=2+3costheta,y=3sintheta-1 is

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  15. The equation to the circle with centre (2,1) and touching the line 3x ...

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  16. The condition for a line y = 2x + c to touch the circle x^(2) + y^(2) ...

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  17. Let P(x(1),y(1))andQ(x(2),y(2)) be two points such that their abscissa...

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  18. The number of common tangents to the circles x^(2)+y^(2)+2x+8y-23=0...

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  19. If x/alpha+y/beta=1 touches the circle x^2+y^2=a^2 then point (1/alpha...

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