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Bluebulb Projects presents:
560 drops is about two-fifths as as a Golf Ball (packed).
In other words, it's 0.440463969 times the of a Golf Ball (packed), and the of a Golf Ball (packed) is 2.27033326 times that amount.
() (per R&A-USGA Rules of Golf) Dictated by the Rules of Golf (as approved by the United States Golf Association and the Rules Committee of the Royal and Ancient Golf Club of Saint Andrews), a golf ball must have a volume of at least 813.68 drops. Golf balls are not required to have the familiar dimpled pattern, but the design has been popular since its invention in 1905 because it reduces drag while increasing lift.