what is the length of the last thing mentioned?
The equator is 0.16% longer than a meridian.
Exact length
The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) have chosen to use an equatorial radius of (codified as the IAU 2009 value). This equatorial radius is also in the 2003 and 2010 IERS Conventions. It is also the equatorial radius used for the IERS 2003 ellipsoid. If it were really circular, the length of the equator would then be exactly 2π times the radius, namely . The GRS 80 (Geodetic Reference System 1980) as approved and adopted by the IUGG at its Canberra, Australia meeting of 1979 has an equatorial radius of . The WGS 84 (World Geodetic System 1984) which is a standard for use in cartography, geodesy, and satellite navigation including GPS, also has an equatorial radius of . For both GRS 80 and WGS 84, this results in a length for the equator of .
what are the major global wind systems on earth polar easterlies, westerlies to name a few. what is the first one about? are the dry, cold prevailing winds that blow from the high-pressure areas towards the low-pressure areas. how does it effect the precipitation? Orographic precipitation occurs on the windward side of mountains and is caused by the rising air motion of a large-scale flow of moist air across the mountain ridge, resulting in adiabatic cooling and condensation. are there any trade that depend on this? Yes, The trade winds. what does it mean? They are the prevailing pattern of easterly surface winds found in the tropics near the Earth's equator.
UNANSWERABLE UNANSWERABLE UNANSWERABLE
wiki:8717846
Equator [SEP] Exact length
The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) have chosen to use an equatorial radius of (codified as the IAU 2009 value). This equatorial radius is also in the 2003 and 2010 IERS Conventions. It is also the equatorial radius used for the IERS 2003 ellipsoid. If it were really circular, the length of the equator would then be exactly 2π times the radius, namely . The GRS 80 (Geodetic Reference System 1980) as approved and adopted by the IUGG at its Canberra, Australia meeting of 1979 has an equatorial radius of . The WGS 84 (World Geodetic System 1984) which is a standard for use in cartography, geodesy, and satellite navigation including GPS, also has an equatorial radius of .