Compute area of circle(using console Input)

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import java.util.Scanner;
public class circleareaconsoleinput
{
public static void main(String arg[])
{
Scanner input=new Scanner(System.in);
System.out.print("Enter radius for radius: ");
double radius = input.nextDouble();
double area=radius*radius*3.14;
System.out.print("Area of circle is : "+area);
}
}

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