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Home > CCG > Chapter 11 > Lesson 11.2.2 > Problem 11-99

11-99.

Find the area of a regular decagon if the length of each side is units.  

Find the measure of a central angle.

Use this to determine the height of one of the triangles.

Find the area of one of the triangles.

Find the total area.

A regular decagon, divided into 10 sectors, with the central angle, of one sector, marked.