Question

write a java program to input the radius of a circle calculate the area and perimeter of the circle and print them​

Answer 1

Answer:

import java.util.Scanner;

public class calculate

{

public static void main(String[] args)

{

Scanner sc= new Scanner (System.in) ;

System.out.println("Enter the radius of the circle: ") ;

double radius= sc. nextDouble();

double circumference=2*Math.PI*radius;

double area= Math. PI*radius*radius;

System.out.println("The circle with radius"+radius+" has an area of : "+area) ;

System.out.println("The circle with radius"+radius+" has a circumference of : "+circumference) ;

}

}

Answer 2

Answer:

Explanation:import java.util.Scanner;

public class circle {

   public static void main(String[] args)

   {

       Scanner input=new Scanner(System.in);

       System.out.println("enter Radius:");

       double radius=input.nextDouble();

       System.out.println("perimeter="+ (2 * Math.PI * radius) );

       System.out.println("area=" + (Math.PI * radius * radius));

   }

}