11. Areas related to Circles

This chapter focuses on finding the areas of different parts of a circle, especially sectors and segments. A sector is the region bounded by two radii and the arc of a circle, while a segment is the region between a chord and its corresponding arc. Students learn how to calculate the length of an arc and the area of a sector using appropriate mathematical formulas.

 

The chapter also includes problems involving combinations of circular shapes, such as semicircles and sectors combined with other figures. These concepts help students solve practical problems related to design, construction, engineering, and architecture, where circular shapes and curved surfaces are commonly used.