Java program to calculate area of a circle
import java.util.Scanner;
public class CalculateAreaOfCircle
{
public static void main(String[] args)
{
double radius;
double pi = 3.1415, area;
Scanner sc = new Scanner(System.in);
System.out.println("Please enter radius of circle: ");
radius = sc.nextDouble();
area = pi * radius * radius;
System.out.println("Area of circle: " + area);
sc.close();
}
}Java Program to find the perimeter of the circle
@Test
public void findPerimeterOfTheCircleProgram12() {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the RADIUS of the Circle: ");
double radius = scanner.nextDouble();
scanner.close();
// Logic for printing the PERIMETER of the circle
System.out.println("Perimeter of the Circle having radius " + radius + (2 * Math.PI * radius));
}Copyright © 2021 Codeinu
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