Rearrange
Now complete the square in and
Can you see the radius and centre?
Hi Have found the one of the circle formulas to be x^2+y^2-4x-10y+19=0. My problem is finding the radius and center with this equation. Can you help me with this question. Also, please show the steps to how you got your answer. Thanks!
Hi starrynight,
there are 2 general ways, one way being to find "g" and "f" by inspection from
then the centre is
then use g and f to find r, using
centre is (2,5)
Alternatively, complete the squares for x and y, using half the coefficents
of x and y.
centre is (2,5), radius is