Answer
By finding equation of circle and plotting it
Work Step by Step
When radius and center is given
we can write the equation of the circle
say $(x-a)^2 + (y-b)^2 = r^2$
=> $y^2 - 2by +(x^2 -2ax + a^2+b^2 -r^2)$ = 0
From here we can get two values of y for each value of x in the range by solving the quadratic equation
And then graph can be plotted from (x, y) values obtained
Range of $x$ will be from $a-r$ to $a+r$
