Hello, I seem to have encountered your problem before. The following is my original solution idea and method. I hope it can help you. I apologize for any mistakes! The diameter of the outer ring is 3 meters 30, 40 centimeters underground, and 60 centimeters fourth. The base of the monument is made of 36 bricks. I've seen it myself. Senior master guidance. , thank you very much for your patience in watching, please adopt it if it helps, and wish you a happy life! Thanks!