How to find the radius of a circle given a center (-5: 2) that touches the y-axis?

The radius of a circle centered at the point (-5; 2) can be defined as the distance from the center to the point where the circle touches the ordinate axis. The required distance is perpendicular to the OY axis and is equal to the absolute value of the abscissa of the center of the circle. Thus, the radius of this circle is 5.
Answer: R = 5.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.