Convert Earth's polar radius to foot
Please provide values below to convert Earth's polar radius [R_p] to foot [ft], or Convert foot to Earth's polar radius.
How to Convert Earth's Polar Radius to Foot
1 R_p = 20855486.5485564 ft
Example: convert 15 R_p to ft:
15 R_p = 15 × 20855486.5485564 ft = 312832298.228346 ft
Earth's Polar Radius to Foot Conversion Table
| Earth's polar radius | foot |
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Earth's Polar Radius
The Earth's polar radius is the distance from the center of the Earth to the North or South Pole, approximately 6,356.8 kilometers.
History/Origin
The fact that the Earth is an oblate spheroid, flattened at the poles, has been known since the 18th century. Modern measurements are made with high precision.
Current Use
The Earth's polar radius is a key parameter in geodesy and is used to define the Earth's shape and gravitational field.
Foot
A foot is a unit of length in the imperial and US customary systems of measurement. A foot was defined as exactly 0.3048 meters in 1959. One foot contains 12 inches, and one yard is comprised of three feet.
History/Origin
The foot has been used as a unit of measurement in many different cultures, including Ancient Greece and Rome, and the length has varied from country to country and even from city to city. The name is said to be based on the average length of a man's foot.
Current Use
The foot is a primary unit of length in the United States, the United Kingdom, and Canada for many everyday applications. In the US, feet and inches are commonly used to measure height, shorter distances, field length (sometimes in the form of yards), etc.