According to the Euclidean Geometry, a circle is a simple shape consisting of those points in a plane which is equidistant from its centre. The common distance of the points of a circle from its center is called its radius

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**Components of a Circle:**
- A
**circle** is a shape with all points the same distance from its center. A circle is named by its center.

- The distance across a circle through the center is called the
**diameter**. Every diameter is a chord, but not every chord is a diameter

- The
**radius** of a circle is the distance from the center of a circle to any point on the circle.

- A
**chord** is a line segment that joins two points on a curve. In geometry, a chord is often used to describe a line segment joining two endpoints that lie on a circle.

Area of Circle can be calculated by using the following formula:

Area = PI r2