16,753,745 acres per 67,800 square km
150000 Square Km = 93205.67884 Square miles
No American state has exactly that area.
37.784 square kilometers = 3,778.4 hectares.
1 acre = 4840 sq yd = 9 x 4840 = 43560 sq ft. 25000 sq ft = 25000 ÷ 43560 = 0.574 acres (3 dp)
At 300 dpi it would be 2,490 x 3,510 pixels.
Greater London covers an area of 1,579 sq. km (390,179 acres) The City of London covers about 26 sq. km (6,424 acres)
12,000 acres = 48.56 km2
The CIA factbook lists Australia at 7,617,930 sq km of land [1] Converting to acres: 7,617,930 sq km = 1.8824315 × 10^9 acres [2] 1.88 billion acres of land [1] https://www.cia.gov/library/publications/the-world-factbook/geos/as.html#Geo [2] http://www.google.com/search?&q=7,617,930+sq+km+in+acres
1 (sq kilometer) = 247.105381 acres
80.937 sq km
The state of Virginia encompasses about 27,375,488 acres.
3.1 square kilometers is about 766 (766.026683)acres.
1 sq km = 100 hectares. 1 sq mile = 2.59 sq km so 509 hectares = 5.09 sq km = 1.97 sq mile. You might also like to remember that 1 sq mile = 640 acres, and 1 hectare = 2.47 acres
89.03 sq km
1 million acres = 4046.856 sq km (to 3 dp).
The total area of California is 158,706 sq mi (411,048 sq km), of which land takes up 156,299 sq mi (404,814 sq km) and inland water 2,407 sq mi (6,234 sq km).
What sort of conversion? There are 9 sq feet in 1 sq yard. 1 sq km = 0.3861 sq mile. 1 sq mile = 640 acres. 1 sq mile = 4.165 sq km. I could go on, but need to know more about what you are looking for.