Home Geometry Problems Art All Problems Circle Circular Sector 401-410 Post a comment 
Problem 403. Circular sector, 90 degrees, Circle, Semicircle, Area.
Level: High School, College, SAT Prep.

The figure shows a circular sector AOB of 90 degrees and a semicircle of diameter OB. Circle D is tangent to OA and arcs AB and OB. If S, S1, S2, and S3, are the shaded areas, prove that S = S1 + S2 + S3.

Circular sector, 90 degrees, area


  Recent Additions