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AP EAMCET202124 Aug 2021Evening ShiftMathematicsCircleActual

The equation of a circle with center at (-2,3) and circumference of 4 units is

Options

  1. Ax^2+y^2+4 x-6 y-9=0
  2. Bx^2+y^2+4 x-6 y+9=0
  3. Cx^2+y^2+4 x-6 y-3=0
  4. Dx^2+y^2-4 x+6 y-9=0

Correct answer

B. x^2+y^2+4 x-6 y+9=0

Step-by-step solution

Circumference of circle is 4 . 2 r=4 ; r=2 Equation of circle whose centre is (-2,3) and radius 2 is (x+2)^2+(y-3)^2=4 x^2+y^2+4 x-6 y+9=0

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