Access the official NCERT Class 10 Mathematics textbook for Chapter 11 – Areas Related to Circles PDF. This chapter deepens your understanding of circle geometry by teaching how to calculate the area and circumference of a circle, the length of an arc, and how to determine the area of a sector and segment. It also covers composite figures, combining circular parts with triangles, rectangles, and more—vital for solving practical math problems and board exam questions.
Chapter Highlights:
- Review: Perimeter (circumference) & area of a circle
- Length of an arc: \((\theta/360°) × 2πr\)
- Area of a sector: \((\theta/360°) × πr²\)
- Area of a segment: sector area – area of triangle
- Areas of composite figures involving circles and standard shapes
- Word problems: shaded regions, arches, window panels, etc.