"Circumference Formula", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License
Alt Text
Assume r' refers to the radius of Earth Prime, and r'' means radius in inches.
"Circumference Formula", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License
Assume r' refers to the radius of Earth Prime, and r'' means radius in inches.