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Correction for the size of a Baseball

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How big is 3 fifths?
It's about eleven times as big as a Baseball
The size of a Baseball is about 0.27787537940 fifths.
(MLB rules)
Per Major League Baseball rules, a baseball must measure between about 0.26646155440 fifths and 0.28928920430 fifths. A major league pitcher can throw a baseball at up to 150 kph (91 mph) in a fastball pitch.
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