mega-square-kilometer = Mk = 10**6 km**2:
This is the
natural unit
for the Earth
surface area since its
total is 510.072 Mk = 510072000 km**2 ≅ 510 Mk
(see Wikipedia: Earth: Side table).
Note:
1 Mk = (10**3 km)**2 = 10**2 pMk (for percent of an MK)
1 pMk = (100 km)**2 = 10**4 km**2
1 km**2 = 100 ha
1 ha = (100 m)**2 = (1/100) km**2
10**6 ha = 10**4 km**2 = 1 pMk
Fiducial surface areas:
- bodies of water:
- Lake Erie: 2.5667 pMk.
- Pacific Ocean: 165.250 Mk ≅
(1/3) of Earth's 510.072 Mk.
- countries,
etc.:
- Australia: 7.692024 Mk.
- Bermuda: 53.2 km**2.
- Canada: 9.984670 MK ≅ 10 Mk. Includes
water area.
- China: 9.596961 Mk. Excludes disputed areas.
- Ecuador: 0.0283561 Mk = 28.3561 pMk.
- Ireland: 0.084421 Mk = 84.421 pMk ≅ 0.1 Mk.
- Monaco: 2.2 km**2 = 220 ha.
- Nauru: 21 km**2.
- Russia: 17.098246 Mk.
- United States of America (USA):
9.833517 Mk. Includes water area.
- Earth: 510.072 Mk.
- Moon: 37.93 Mk ≅ 0.074 of
Earth's.