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PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoLet us recall the fundamentals of circles which we studied in previous chapters.
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.
- The distance across the circle.
- The length of any chord (a straight line which connects two points on a circle) passing through the center.
- It is twice the radius.
![shutterstock_1747167668 (1).jpg](https://resources.cdn.yaclass.in/16151754-74a1-46b0-92b0-d376761aad55/shutterstock17471676681w292jpg.jpg)
Diameter \(=\) \(2 ×\) Radius \(=\) \(2r\)
Radius of the circle:
The radius is the distance from the center to any point on the circle.
![shutterstock_1747167668.jpg](https://resources.cdn.yaclass.in/b42a508b-883c-4172-a21f-82aabe30f639/shutterstock1747167668w299jpg.jpg)
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 \(=\) sq. units
![shutterstock_269752994.jpg](https://resources.cdn.yaclass.in/e4c07960-ae56-4692-8c26-936de5968e6a/shutterstock269752994w322jpg.jpg)
Here \(r\) is the radius of the circle.
The value of the [pi] can be either \(22/7\) or \(3.14\).