Circle Calculator
        
            A circle is the set of all points in a plane at a fixed distance, called the radius, from a given point, the centre. 
	Here you can calculate the area, diameter, circumference of a circle and also area of a sector.
        
        
            
                Diameter of Circle: [ 2r ]
                
                
             
            
            
                Circumference of Circle:[ 2πr ]
                
                
             
              
             Area of Sector: [ ½×arc×(angle in degree)  ]