Radical or radicand
RADIUS
Revolution. Against the British rule.
the place where a river starts
A term is receive which is used in soccer.
suluru
genetic or geographical
Another word for "fill" that starts with an "R" is "replete." This term conveys the idea of being filled to capacity or abundantly supplied. It can be used in various contexts to indicate fullness or saturation.
No, "Geographical" is not a word. The correct term is "geographic."
geographical map
The geographical term for heights is elevation. Elevation is the vertical distance of a location above a reference point, such as sea level.
Geographical area