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import java.util.*;
import java.text.DecimalFormat;
class Rad
{
static public void main(String[] args)
{
DecimalFormat f2 = new DecimalFormat("0.0");
int radi;
double ar,per;
System.out.println("Input the radius, -1 to quit");
Scanner in = new Scanner (System.in);
radi= in.nextInt();
while(radi >0)
{
ar=radi*radi*3.14;
per=2*3.14*radi;
System.out.println("The area is: " + f2.format(ar) + ".");
System.out.println("The perimeter is: " + f2.format(per) + ".");
System.out.println(" \n************************ \n");
System.out.println("Input the radius, -1 to quit");
radi= in.nextInt();
}
System.out.println("\nThanks.");
}
}