1 C. Write a Java program to print the area and perimeter of a circle

 Program:

import java.util.Scanner;

 

class Circle

{

public static void main(String args[])

{

Scanner sc= new Scanner(System.in);

 

System.out.println("radius=");

int radius =sc.nextInt();

 

double area=Math.PI*radius*radius;

double perimeter=2*Math.PI*radius;

 

System.out.println("area of a circle:"+area);

System.out.println("perimeter of a circle:"+perimeter);

}

}