Correction for the size of a Baseball (packed)
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How big is 242.20 perches?
It's about 500,000 times as big as a Baseball (packed)
The size of a Baseball (packed) is about 0.00046902191 perches.
(64% packing density) (MLB rules)
Per Major League Baseball rules, a baseball must measure between about 0.00028784427 perches and 0.00031250377 perches. A major league pitcher can throw a fastball at up to 150 kph (91 mph).