Maths Class 10 Chapter 12 Areas Related to Circles

Maths Class 10 Chapter 12 Areas Related to Circles



Important Concepts and Formulas

1.      The Greek letter π is defined as the ratio of the circumference to the diameter.


       Circumference = π × diameter
                                = π × 2r   (where r is the radius of the circle)
                                = 2πr

2.      The area of a circle = πr2
      
      To know the formulas for areas of different 2D shapes -------- Click Here!

3.      The length of an arc of a sector of a circle with radius r and with central angle θ is given by:

4.      Area of a sector of a circle with radius r and with central angle θ is given by:


5.      Area of segment of a circle = Area of the corresponding circle – Area of the corresponding triangle.

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