Correction for the size of a Baseball (packed)
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How big is 2.017333416 deciliters?
It's about three-fifths as big as a Baseball (packed)
The size of a Baseball (packed) is about 3.28710230 deciliters.
(64% packing density) (MLB rules)
Per Major League Baseball rules, a baseball must measure between about 2.0173334 deciliters and 2.19015750 deciliters. A major league pitcher can throw a fastball at up to 150 kph (91 mph).