Relationship between Arc Length, Area of Sector, Radius and Angle (in degrees)

[color=#000000]Original creation of this applet goes to [url=https://www.geogebra.org/jennifer+silverman]Jennifer Silverman[/url] and subsequent changes by [url=https://www.geogebra.org/tbrzezinski]Tim Brzezinski[/url] (derived from [url=https://www.geogebra.org/material/show/id/kJWspwbf]this worksheet[/url].) [br][br]Interact with this applet for a few minutes, then answer the question that follows. [/color]
[color=#000000]Is there any relationship among[/color] [color=#cc0000][b]the arc [b]length, sector area [/b][/b][/color], its[color=#1155cc][b] angle subtended at the centre of the circle (in degrees)[/b][/color], and the [b][color=#ff7700]radius of the circle[/color][/b]? If so, describe.

Information: Relationship between Arc Length, Area of Sector, Radius and Angle (in degrees)