Home
Class 12
MATHS
For the circle x^(2)+y^(2)-4x+2y+c=0 rad...

For the circle `x^(2)+y^(2)-4x+2y+c=0` radius is 4 then c=

A

`-11`

B

`11`

C

4

D

`-4`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CIRCLES

    AAKASH SERIES|Exercise EXERCISE II|169 Videos

  • CIRCLE

    AAKASH SERIES|Exercise EXERCISE -1.4|38 Videos

  • COMPLEX NUMBERS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|93 Videos

Similar Questions

Explore conceptually related problems

If the circle x^(2)+y^(2)-4x+6y+a = 0 has radius 4 then find a.

If the circle x^(2) + y^(2) + 4x -22y + c = 0 bisects the circumference of the circle x^(2) + y^(2) - 2x + 8y - d = 0 , then c + d =

If the circle x^(2) + y^(2) + 4x - 6y - c = 0 bissects the circumference of the circle x^(2) + y^(2) - 6x + 4y - 12 = 0 , then c =

If y+c=0 is a tangent to the circle x^(2)+y^(2)-6x-2y+1=0 at (a, 4), then

If the circle x^(2) + y^(2) -4x + 6y + a =0 has radius 4, find a.

The point (-1,0) lies on the circle x^2+y^2-4x+ 8y + k=0 . The radius of the circle is

The value of k for which the circle x^(2) + y^(2) -4x + 6y +3 =0 will bisect the circumferece of the circle x^(2) +y^(2) +6x -4y +k=0 is

AAKASH SERIES-CIRCLES-PRACTICE EXERCISE
  1. The equation of the circle concentric with x^(2)+y^(2)-6x+4y-3=0 and h...

    Text Solution

    |

  2. The equation of the circle concentric with x^(2)+y^(2)-2x+8y-23=0 and ...

    Text Solution

    |

  3. For the circle x^(2)+y^(2)-4x+2y+c=0 radius is 4 then c=

    Text Solution

    |

  4. If A(1),A(2),A(3) be the areas of circles x^(2)+y^(2)+4x+6y-19=0, x^(2...

    Text Solution

    |

  5. The equation of the circle with centre (2,3) and distance between (0,0...

    Text Solution

    |

  6. The equation of the circle with radius 4 and centres as the midpoint o...

    Text Solution

    |

  7. The circle with centre (1,-3) and radius being the distance between th...

    Text Solution

    |

  8. If the area of the circle x^(2)+y^(2)+4x+2y+k=0 is 5pi square cms then...

    Text Solution

    |

  9. If (2,3) is an extremity of a diameter of the circle x^(2)+y^(2)-5x-8y...

    Text Solution

    |

  10. The line x/a+y/b=1 meets the axis of and y at A and B respectively and...

    Text Solution

    |

  11. Equation of circle with centre (-1,2) and passing through the centroid...

    Text Solution

    |

  12. The centroid of an equilateral triangle is (0, 0) and the length of th...

    Text Solution

    |

  13. Equation of the circle with radius 10 and whose two diameters are x+y=...

    Text Solution

    |

  14. If a circle is inscribed in a square of side 10, so that the circle t...

    Text Solution

    |

  15. Show that the equation of the circle which pass through the points (1,...

    Text Solution

    |

  16. If the abscissae of points A, B are the roots of the equation x^(2) + ...

    Text Solution

    |

  17. The abscissae of two points A and B are the roots of the equation x^(2...

    Text Solution

    |

  18. The circle described on the line joining the points (0,1), (a,b) as di...

    Text Solution

    |

  19. The equation of the circle passing through (3,0) and (0,4) and having ...

    Text Solution

    |

  20. The line x/a+y/b=1 cuts the coordinate axes at a and B a line perpendi...

    Text Solution

    |