You can't convert between linear units and units of area.
Answer: 1 km² = 0.386102 mi²
.9266 sq mi
Answer: 8400 km² = 3,243.26 mi²
1 sq kilometer = 0.386 sq mi
Land area: 3,511,003 sq mi (9,093,507 sq km); total area: 3,855,102 sq mi (9,984,670 sq km).
Answer: 25,610 mi² = 66,329.595 km²
Land area: 1,056,636 sq mi (2,736,690 sq km); total area: 1,068,296 sq mi (2,766,890 sq km).
50,337 sq mi
Answer: 302 mi² = 782.18 km²
1 sq kilometer = 1000000 sq meters
344.3 sq. mi.
247.10 acres in a sq kilometer