Area of a circle

A circle 

A closed line consisting of all points on the plane that are equidistant from a given point on the plane is called a circle.
Area of circle = πr2, where r is the radius of the circle.
Diameter of Circle:

The distance across the circle. The length of any chord passing through the center. It is twice the radius.
Diameter = 2Radius = 2r

Radius of circle:
The radius is the distance from the centre to any point on the circle.
Radius is also known as half  of the diameter.

Area of the Circle:
The area of a circle is the number of square units inside that circle.
Area of the Circle = πr2 sq.units
Here r is the radius of the circle.

The value of the π [pi] can be either 22/7 or 3.14.

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clas 7 math
Medha Sharma

Course : CBSE Class 7

Start Date : 02.02.2023

End Date : 18.07.2023

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