A circle is defined as the set of points equidistant from a fixed center in a plane, with the radius being the distance from the center to the edge. The diameter is twice the radius, and its formula is d = 2r, while r = d/2. The area of the circle can be calculated using the formula a = πr², with π approximated as 3.14.

1. Circle

2. Circle
A circle is defined as a set of all the
points which are at a constant distance
from a fixed position in a plane

3. Area

4. Radius
The distance from the centre to the edge of
any point of the circle

5. Diameter
The distance from one side to the other
passing through the centre is diameter
d = 2r
r = d/2

6. Area of the circle
Area of the circle 𝐴 = 𝜋𝑟2
𝜋 = 3.14 ; r = radius of the circle