Write the equation of the circle with its center at (2, -3) and a radius of 5.

Write it in the form $$\left(x-h\right)^2+\left(y-k\right)^2=r^2$$

Make sure to square the radius before you type your answer!

Find the radius of the circle with a center at (8, 4) and a point on the circle at (5, 8).

Hint: (Distance Formula or Pythagorean Theorem)

$$\left(x+5\right)^2+\left(x-10\right)^2=169$$

Using the equation above, what is the radius?

What is the radius of this circle?