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AP EAMCET2004MathematicsCircle

The radius of the circle r= 3 + is

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

A. 1

Step-by-step solution

Given equation of circle is r= 3 + On putting x=r , y=r array lc & r= 3 x r + y r & r^2= 3 x+y & x^2+y^2- 3 x-y=0 Radius = g^2+f^2-c & = ( 3 2 )^2+ ( 1 2 )^2 = 4 4 =1 array

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