Write the equation of a circle given the center and point

The video tutorial explains how to determine the radius of a circle using both geometric and algebraic methods. It begins with plotting points and identifying the circle's center, then discusses using the Pythagorean theorem to find the radius. The tutorial also covers an algebraic approach to solving for the radius and explores alternative methods, emphasizing understanding through both geometric and algebraic perspectives.

Explain how to use the coordinates (0, 1) to solve for r in the context of the circle.

What are the two approaches mentioned for finding r squared?