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  1. /*Name:Chris McGlynn
  2. Date: 27/09
  3. Program to find measurements of a circle
  4.  */
  5.  
  6. import java.text.DecimalFormat;
  7.  
  8. public class Circle1 {
  9.  
  10.     public static void main (String [] args) {
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  13.         DecimalFormat df = new DecimalFormat("00.00");
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  16.        Double radius=8.25;
  17.        Double diameter=2*radius;  //theory for diameter
  18.        Double circumference=2*Math.PI*radius; //theory for circumference
  19.  
  20.  
  21.        Double areaOfCircle;
  22.  
  23.         areaOfCircle = Math.PI * Math.pow(radius,2); //theory for area
  24.  
  25.         System.out.println ("The area is "+df.format(areaOfCircle)+" units squared");
  26.         System.out.println ("The diameter of the circle is " +df.format(diameter) + (" units"));
  27.         System.out.println ("The circumference of the circle is " +df.format (circumference) + (" units"));
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  45.     }
  46.  
  47. }
  48.  
  49.  
  50. /*The radius is 4.50 units
  51. The diameter is 9.00 units
  52. The circumference is 28.27 units
  53. The area is 63.62 units squared
  54. Diameter = 2 * radius
  55. Circumference = 2 * π * radius
  56. Area = π * (radius) 2
  57.  */
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