What is the center?
the circle passes through the point (-7,-7). what is the radius?

We have been given image of circle that passes through point . We are asked to find the radius of the circle.

First of all, we will find the center of the circle.

We can see that center of circle is at point .

Now we will use equation of circle to find radius.

, where, point (h,k) represents center of circle and r represents radius of circle.

Now we will substitute the coordinates of point and coordinates of center and solve for r as:

Switch sides:

Now we will take positive square root on both sides:

Therefore, radius of circle will be and center is at point .

0.02040816326

step-by-step explanation: