Area of the Circle

Circle:

A circle is a simple shape of with set of points in the plane that are equidistant from a given point called centre. The distance between any of the points and the centre is called the radius.

Properties of the Circle:(Click to see the properties)

Formulae:
Area Of the circle: [π r² ]; r=Radious, π=22/7;
Area Of the Half circle: [π r² ]/2;
Diameter d=2r(r =radious)

Area of the Circle:

Enter the Radious of the Circle:
Area of the Circle:

Circumference of the Circle:

Enter the Radious of the Circle:
Circumference of the Circle:

Diameter of the Circle:

Enter the Radious of the Circle:
Diameter of the Circle:

Area of the Sector:Formulae

A circle has an angle of 2π and an Area of: πr2

Area of Sector = ½ * Θ * r^2 (when Θis in radians)

Area of Sector = ½ * (Θ * π/180) * r^2 (when Θ is in degrees)

Enter the Radious of the Circle:		Enter the Degree:
Area of Sector: