It's about one-and-one-tenth times as big as Belgium.
In other words, 31,000,000 dunams is 1.0155 times the size of Belgium, and the size of Belgium is 0.984740 times that amount.(a.k.a. Kingdom of Belgium, a.k.a. Koninkrijk Belgi&, a.k.a. Royaume de Belgique, a.k.a. K&nigreich Belgien)
Belgium measures 30,528,000 dunams in total area. Contrary to their name, french fries were developed in Belgium (known at the time as the Southern Netherlands) in the late 17th century.
It's about as big as Maryland.
It's about one-and-one-tenth times as big as Hawaii.
In other words, 31,000,000 dunams is 1.094976 times the size of Hawaii, and the size of Hawaii is 0.9132620 times that amount.(a.k.a. Moku'āina o Hawai'i) (United States)
The "Aloha State," Hawaii measures 28,311,110 dunams in total area. A total of 137 islands make up the Hawaiian archipelago, with the eight principle islands measuring 16,634,500 dunams in combined total area.
It's about one-and-one-tenth times as big as Massachusetts.
In other words, 31,000,000 dunams is 1.1340270 times the size of Massachusetts, and the size of Massachusetts is 0.88181320 times that amount.(a.k.a. The Commonwealth of Massachusetts) (United States)
The "Bay State," Massachusetts measures 27,336,210 dunams. The peninsula of Cape Cod, which stretches into the Atlantic near from the southern tip of the state measures approximately 1,030,000 dunams.
It's about one-and-one-fifth times as big as Lake Erie.
In other words, 31,000,000 dunams is 1.210 times the size of Lake Erie, and the size of Lake Erie is 0.8260 times that amount.(a.k.a. Lac &ri&) (surface area)
The fourth largest of North America's Great Lakes and the thirteenth largest lake in the world (by surface area), Lake Erie has a total area of 25,700,000 dunams. It borders the cities of Cleveland, Ohio and Toledo, Ohio.
It's about one-and-one-fourth times as big as Vermont.
It's about one-and-three-tenths times as big as New Hampshire.
In other words, 31,000,000 dunams is 1.280130 times the size of New Hampshire, and the size of New Hampshire is 0.7811710 times that amount.(United States)
The "Granite State," New Hampshire measures 24,216,200 dunams in total area. New Hampshire's western border with Vermont is marked by the Connecticut River — the longest river in New England with a length of 655 km (407 mi).