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31,000,000 dunams is about one-fourth as big as Pennsylvania.
In other words, it's 0.25988720 times the size of Pennsylvania, and the size of Pennsylvania is 3.8478230 times that amount.
(formally the Commonwealth of Pennsylvania) (United States)
The "Keystone State," Pennsylvania measures 119,282,500 dunams. Although Philadelphia is home to one of the nation's busiest seaports (by amount of container traffic), the state of Pennsylvania has just 92 km (57 mi) of coastline along the Delaware Estuary and no coastline on the Atlantic ocean.
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