What is the size of an amateur boxing ring?
http://www.boxinggyms.com/tips/ring_usa_boxing.htm THE RING The ring shall not be less than 16 nor more than 20 feet square within the ropes; the apron on the ring floor shall extend beyond the ropes not less than two feet. The ring shall not be more than four feet above the floor of the building or grounds or an outdoor arena and shall be provided with three sets of suitable steps for the use of boxers, coaches and officials, one in each boxer’s corner and one in a neutral corner for use by doctors and referee. For international competition, the minimum size shall be 16 feet square and the maximum size 20 feet square, measured inside the line of the ropes. In international championships, the size of the ring shall be 20 feet square, measured inside the line of the ropes, and it shall not be less than three feet or more than four feet above the ground or base. The ring shall be equipped with at least four r
