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BITSAT2023MathematicsCircleActual

The equation of the circle with centre (0,2) and radius 2 is x^2+y^2-m y=0 . The value of m is

Options

  1. A1
  2. B2
  3. C4
  4. D3

Correct answer

C. 4

Step-by-step solution

Here h=0, k=2 and r=2 . Therefore, the required equation of the circle is : (x-0)^2+(y-2)^2=(2)^2 or x^2+y^2-4 y+4=4 or x^2+y^2-4 y=0

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