It's about 0.00000000000007 times as big as Fort Bliss
In other words, 0.00000002850 hectares is 0.00000000000006290 times the size of Fort Bliss, and the size of Fort Bliss is 15,900,000,000,000 times that amount.(near Las Cruces, New Mexico and El Paso, Texas)
Fort Bliss is the United States Army's second-largest installation with a total area of 453,000 hectares. It is known as the largest TRADOC (Training and Doctrine Command) site, the Army's largest maneuver area, and the country's largest contiguous tract of open airspace.
It's about 0.00000000000006 times as big as Grand Canyon National Park
In other words, 0.00000002850 hectares is 0.00000000000005780240280 times the size of Grand Canyon National Park, and the size of Grand Canyon National Park is 17,300,318,900,000 times that amount.(Coconino County and Mohave Counties, Arizona, near Fredonia and Grand Canyon, Arizona)
Containing the 446 km (277 mi) Grand Canyon gorge, Grand Canyon National Park covers 493,059 hectares.
It's about 0.00000000000006 times as big as Calgary
In other words, 0.00000002850 hectares is 0.00000000000005577070 times the size of Calgary, and the size of Calgary is 17,930,600,000,000 times that amount.(Calgary metro) (Canada)
One of the largest cities in Canada, Calgary measures 511,021 hectares. Calgary has a large parks system, with 800 km of pathways connecting the city's various parks.
It's about 0.00000000000005 times as big as Prince Edward Island
In other words, 0.00000002850 hectares is 0.00000000000005014150 times the size of Prince Edward Island, and the size of Prince Edward Island is 19,943,600,000,000 times that amount.(a.k.a. PEI, a.k.a. P.E.I., a.k.a. Île-du-Prince-Édouard, a.k.a. Eilean a' Phrionnsa, a.k.a. Garden of the Gulf, a.k.a. Birthplace of the Confederation, a.k.a. Île Saint-Jean)
Prince Edward Island, located off Canada's eastern coast in the Gulf of St. Lawrence, measures 568,391 hectares in total area. Significant among Prince Edward Island's industries is agriculture, with the island producing 1.3 billion kg (1.4 million tons) of potatoes each year — almost 21% the output of the US state of Idaho with 3% as much land.
It's about 0.00000000000005 times as big as Tshwane
In other words, 0.00000002850 hectares is 0.000000000000044760 times the size of Tshwane, and the size of Tshwane is 22,340,000,000,000 times that amount.(a.k.a. Pretoria, a.k.a. ePitoli, a.k.a. Jacaranda City) (Gauteng, South Africa) (for Tshwane metro area)
Tshwane, South Africa's executive capital, measures 636,800 hectares in total metro area. The Reserve Bank of South Africa is the city's tallest building at 150 m in height.
It's about 0.00000000000004 times as big as Ottawa
In other words, 0.00000002850 hectares is 0.00000000000004211360 times the size of Ottawa, and the size of Ottawa is 23,745,300,000,000 times that amount.(a.k.a. Ville d'Ottawa) (Ottawa metropolitan area) (Canada)
The capital and fourth-largest city of Canada, Ottawa measures 676,741 hectares. For many years, the skyline of Ottawa was dominated by the Peace Tower (la Tour de la Paix), with city ordinances preventing other structures from exceeding its 92.2 m height.
It's about 0.00000000000003 times as big as Hawaii (Island)
In other words, 0.00000002850 hectares is 0.00000000000002731850 times the size of Hawaii (Island), and the size of Hawaii (Island) is 36,605,200,000,000 times that amount.(a.k.a. Hawaii, a.k.a. The Big Island) (Hawaii)
The largest of the main Hawaiian Islands and the largest island in the United States, Hawaii measures 1,043,250 hectares in total area. It is known for its continuously erupting (for the past two decades, as of 2011) volcano, Kīlauea, and for the black sand beaches formed by the lava flow.