Correction for the weight of an American Football
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How heavy is 18.7481816257510 shekels ( שקלים)?
It's about two-fifths as heavy as an American Football
The weight of an American Football is about 49.427024286070 shekels ( שקלים).
(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 47.722644138280 shekels ( שקלים) and 51.131404433870 shekels ( שקלים). Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.