What is an example of radial balance

Radial balance occurs when elements radiate from a common center. Rays of sunlight and ripples in a pond after a stone is tossed in are examples of radial balance. Maintaining a focal point (fulcrum) is easy because it's always the center.

answer; i believe the correct answer is in new york,in subway stations,public murals and night clubs;

the longest time is 123 years