(x-5)*2 +(y-4)*2=25
Explanation
Equation of circle is (x-a)*2 + (y-b)*2=r*2
Expand equation to get
x*2 - 2ax + y*2- 2by+ b*2= 0
Then take the points and put them into the equation
You will then have two equations
Solve them simultaneously to find a and b
Where a= 5 and b = 4
After put it back to the equation of the circle
