area of circle in java
import java.util.Scanner;
public class AreaOfCircle {
public static void main(String args[]){
int radius;
double area;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the radius of the circle ::");
radius = sc.nextInt();
area = (radius*radius)*Math.PI;
System.out.println("Area of the circle is ::"+area);
}
}Area of a Circle in Java Programming
import java.util.Scanner;
public class Main {
public static void main(String[] args){
double R,A;
Scanner sc = new Scanner(System.in);
R = sc.nextDouble();
A = 3.14159 * R * R;
System.out.printf("A=%.4f\n", A);
}
}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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