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0.000000000310 megatonnes is about three-fourths as heavy as a Football (American)
In other words, it's 0.75413297961170 times the weight of a Football (American), and the weight of a Football (American) is 1.3260260816530 times that amount.
(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.000000000396893323750 megatonnes and 0.0000000004252428468750 megatonnes. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
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