What are the dimensions of a baseball?

Answer 1

Rule 1.05 states:

"Home base shall be marked by a five-sided slab of whitened rubber. It shall be a 17-inch square with two of the corners removed so that one edge is 17 inches long, two adjacent sides are 8½ inches and the remaining two sides are 12 inches and set at an angle to make a point."

Rule 1.07 states:

"The pitcher's plate shall be a rectangular slab of whitened rubber, 24 inches by 6 inches."

Answer 2

In Major League Baseball, the pitcher's plate, or pitching rubber, is 24 inches long and 6 inches wide.

Answer 3

9 to 9 1/4 inches in circumference and 5 to 5 1/4 ounces in weight.

Answer 4

9" in circumference, 5.5oz in weight.