Question

4) write a program that inputsradius of a circle and finds itsperimeter.



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Answer 1

Answer:

import java.util.Scanner;

public class AreaAndCircumferenceOfCircle.

{

public static void main(String args[])

{

double circumference, area;

int radius;

//object of the Scanner class.

Answer 2

import java.util.Scanner;

public class calculate

{ double radius= sc. nextDouble(); double circumference=2*Math.PI radius; double area= Math. Pl*radius*radius;

public static void main(String[] args)

{

Scanner sc= new Scanner (System.in);

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

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);

}

}