how big is a baseball in size?
At most, a baseball can have a circumference of 9.25 inches. This is a small increase -- less than 3 percent -- over the minimum size, but it affects all the dimensions of the ball. It makes the maximum diameter 2.94 inches and the maximum radius 1.47 inches. The maximum allowable surface area for a baseball is 27.24 square inches and the maximum volume is 13.37 cubic inches.