QUESTION 1
The given circle has equation:
We can rewrite to obtain;
This is equation is now in the form;
Where (h,k)=(0,0) is the center of the circle and is the radius.
QUESTION 2
The center of the circle is at (1,1) and passes through the point (4,5).
The radius of this circle is given by;
units.
We substitute into the formula;
Expand if you wish;
