Java program to find area and circumference of a circle

find area and circumference of a circle using java

import java.util.*;
import java.lang.Math.*;
class circle{
public static void main(String arg[])
{
int r;
Scanner in = new Scanner(System.in);
System.out.println("enter the radius");
r = in.nextInt();
System.out.println("area="+Math.PI*r*r);
System.out.println("circumference="+r*2*Math.PI);
}


}

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