It's about one-sixty-thousandth as big as Butte.
In other words, 31.50 dunams is 0.000016966250 times the size of Butte, and the size of Butte is 58,940.540 times that amount.(The City and County of Butte-Silver Bow) (Montana)
The eighth-largest city in the country and the second-largest in Montana, the Butte-Silver Bow City County measures 1,856,627 dunams. The city was called "the Richest Hill on Earth" for its numerous copper, silver, and gold mines.
It's about one-sixty-thousandth as big as Maui.
In other words, 31.50 dunams is 0.0000167240 times the size of Maui, and the size of Maui is 59,794 times that amount.(Hawaii)
The second-largest of the Hawaiian Islands, Maui measures 1,883,500 dunams in total area. It is known as the home of the Maui High Performance Computing Center and as a major tourist destination.
It's about one-sixty-thousandth as big as Anaconda.
In other words, 31.50 dunams is 0.0000164070 times the size of Anaconda, and the size of Anaconda is 60,950 times that amount.(Anaconda City/Deer Lodge County) (Montana)
The consolidated city-county of Deer Lodge County (of which Anaconda is the county seat) measure 1,919,900 dunams in total area. The town of Anaconda is named after the Anaconda Mine owned by the town's founder, Marcus Daly, and was itself the namesake of the Anaconda Copper Company, one of the largest trusts of the twentieth century.
It's about one-seventy-thousandth as big as Jacksonville.
In other words, 31.50 dunams is 0.000013820750 times the size of Jacksonville, and the size of Jacksonville is 72,354.970 times that amount.(Florida)
The largest city in Florida and the fifth-largest city in the country, Jacksonville measures 2,279,181 dunams in total area. The city is known for its diversified industrial and manufacturing base and as a transportation hub, featuring a prominent deep-water port, a large airport, and extensive rail yards.
It's about one-eighty-five-thousandth as big as Fort Irwin.
In other words, the size of Fort Irwin is 83,000 times 31.50 dunams.(San Bernardino County, California)
Fort Irwin measures 2,600,000 dunams in total area. It is known as part of the Installation Management Command and as the home of the Army's National Training Center.
It's about one-ninety-five-thousandth as big as Yosemite National Park.
In other words, 31.50 dunams is 0.00001040680 times the size of Yosemite National Park, and the size of Yosemite National Park is 96,091 times that amount.(Tuolumne, Mariposa, and Madera counties, California, near Mariposa, California) (total land area)
Famous for its granite cliffs and Giant Sequoia groves, Yosemite National Park is 3,026,870 dunams in total area, of which 208,000 dunams is the well-known Yosemite Valley. The Park is known as the home of Yosemite Falls — the highest waterfall in North America and sixth highest in the world at 739 m (2,420 ft)
It's about one-one-hundred-thousandth as big as Big Bend National Park.
In other words, 31.50 dunams is 0.000009715660 times the size of Big Bend National Park, and the size of Big Bend National Park is 102,927 times that amount.(Brewster County, Texas, near Alpine, Texas)
Located on the Rio Grande (a.k.a. Rio Bravo) which forms part of the boundary between the United States and Mexico, Big Bend National Park occupies 3,242,190 dunams. With less than half a million visitors per year, Big Bend is one of the continental United States' least trafficked parks.