Question

program that input the radius of a circle and find its perimeter​

Answer 1

Answer:

/Java program to Calculate Perimeter of a Circle.

import java.util.Scanner;

public class PerimeterCircle {

public static void main(String[] args) {

double radius;

Scanner sc= new Scanner(System.in);

// input radius of circle. ...

radius=sc.nextDouble();

// circle parameter is 2 * pie * radius

Answer 2

Assignment method

class circle

{

public static void main ( String args [])

{

int r = 7 (as per you);

double p= 2*(22/7.0)*r;

System.out.println("perimeter"+p);

}

}

CLA method

class circle

{

public static void main(int r)

{

double p= 2*(22/7.0)*r

System.out.println("perimeter "+p);

}

}