Geometry 12.3a, Sector of a circle & Sector area

An explanation and definition of a sector of a circle, and the formula we would use to find the area of a sector. We find the area that is watered by a Center Pivot irrigation system sprinkler that rotates through an angle of 50 degrees on a circular plot.

Center pivot irrigation system
https://en.wikipedia.org/wiki/Center_pivot_irrigation

High School Geometry Playlist
https://www.youtube.com/playlist?list=PLKi4WTp6PRGVBM1nPhwW1lTuxi32Q0IZ3

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