A "kiloyard" is not a commonly used unit of measurement, and it is not part of the International System of Units (SI). In everyday conversation and most scientific contexts, the yard is used as a unit of length in some countries, primarily the United States and the United Kingdom. One yard is equal to 3 feet or 36 inches.
The prefix "kilo-" typically denotes a factor of 1,000. So, a "kiloyard" would theoretically be 1,000 yards. However, this term is not standard in any established system of measurement and is unlikely to be encountered in practical use. If you need to express a length of 1,000 yards, it's more common to simply say "1,000 yards" or "one thousand yards" rather than using the term "kiloyard."
Earth's equatorial radius, often denoted as "R," is the distance from the center of the Earth to the point on the Earth's surface that lies along the equator. It represents the Earth's average radius when measured from its center to its equatorial surface. The equatorial radius is greater than the polar radius because the Earth is slightly flattened at the poles and bulges at the equator due to its rotation.
The approximate value for Earth's equatorial radius is about 6,378.1 kilometers (or approximately 3,963.2 miles). This value may vary slightly depending on the reference ellipsoid used for modeling the Earth's shape, but the given value is a commonly used and accurate approximation for most purposes.
In contrast to the equatorial radius, Earth's polar radius (measured from the center to a point on the Earth's surface at the North or South Pole) is slightly shorter, approximately 6,357 kilometers (3,949 miles).