Original: The modern sport of American Handball is similar in context and rules to both Irish and Scottish versions played from the 13th century in Scotlandhttp : \/O/ \/O/ www.handball.org/info.html and 14th century in Ireland .
Simplified: The front wall is 6.1 meters ( 20 feet ) square , and the side walls are 12.2 meters ( 40 feet ) long and 6.1 meters ( 20 feet ) high .