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cgorrillaha

AreaCirc1

Sep 28th, 2020
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Java 1.07 KB | None | 0 0
  1. import java.util.Scanner;
  2.  
  3. class Main {
  4.   public static void main(String[] args) {
  5.     Scanner scan = new Scanner(System.in);
  6.     final double PI = 3.14159;
  7.  
  8.     System.out.println("Please enter a radius:");
  9.     int radius = scan.nextInt();
  10.  
  11.     double area1 = PI * radius * radius;
  12.     double area2;
  13.     double circ1 = PI * radius * 2;
  14.     double circ2;
  15.  
  16.     System.out.println("The area of a circle with radius " + radius + " is " + area1);
  17.     System.out.println("The circumference of a circle with radius " + radius + " is " + circ1);
  18.  
  19.     radius = radius * 2;
  20.     area2 = PI * radius * radius;
  21.     circ2 = PI * radius * 2;
  22.  
  23.     System.out.println("The area of a circle with radius " + radius + " is " + area2);
  24.     System.out.println("The cricumference of a circle with radius " + radius + " is " + circ2);
  25.  
  26.     String areaDoubles=((area2 / area1)==2)?"yes":"no";
  27.     System.out.println("Does area double? " + areaDoubles);
  28.     String circDoubles=((circ2 / circ1)==2)?"yes":"no";
  29.     System.out.println("Does circomference double? " + circDoubles);
  30.  
  31.   }
  32. }
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