The Radius Selection command selects all objects that fall within a given radius. For example, you have a table of blood donors and a table of blood donation sites. Using the Radius Selection command, you could create a temporary list of blood donors that live within a one-half-mile radius of each blood donation site.
Use Radius Selection to select all objects whose centroid falls within the circle. The object does not have to be completely bounded by the circle.
To select objects within a radius: