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# CBSE Class 10 Maths Chapter 12 Revision Notes Areas Related to Circles

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## CBSE Class 10 Maths Chapter 12 Revision Notes Areas Related to Circles

CBSE Revision Notes Class 10 Maths Chapter 12 are provided to help the students understand and revise the concepts right from the beginning. The concepts taught in Class 10 are important to be understood as these concepts are the stepping stones for the upcoming syllabus. To score good marks in the Class 10 mathematics examination, it is advised to solve questions provided in the Revision Notes Class 10 Maths Chapter 12. These revision notes for Class 10 Maths help the students to revise all the concepts in a better way.

Swiflearn provides Revision Notes and keynotes chapter wise for the CBSE board exam in an easy-to-understand, free downloadable PDF format so students can use it for their studies and score better in their board exams. The CBSE Class 10 Revision Notes are made for the main subjects of Science and Maths. These core subjects are very critical as they are the stepping stones and play a crucial role in a student’s future. They might be tricky for students. The CBSE Class 10 Revision Notes for each chapter will enable them to have an expert studying pattern with which they can enjoy learning the subject and perform better in the exams.

CBSE Class 10 Maths Revision Notes are designed keeping in mind the exam pattern and syllabus of NCERT 2020-21. Students can download the PDF for free and practice the questions to score well in the coming exams.

## CBSE Class 10 Maths Chapter 12 Revision Notes Areas Related to Circles

Sector of a circle:-

A sector of a circle is the portion (or part) of the circular region enclosed by two radii and the corresponding arc.

• OAPB is called the minor sector
• OAQB is called the major sector
• ∠ AOB is called the angle of the minor sector
• Angle of the major sector is 360° – ∠ AOB