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P2.2

Write a program that computers and displays the perimeter of a letter-size (8.5 x 11 inches) sheet of paper and the length of its diagonal.

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Solution:

import static java.lang.Math.pow;
import static java.lang.Math.sqrt;
import static java.lang.System.out;

class P0202 
{
  public static void main(String[] args) 
  {
    final double paperWidthInches = 8.5;
    final double paperLengthInches = 11.0;
    final double perimeter = (2 * paperWidthInches) + (2 * paperLengthInches);
    final double diagonal = sqrt(pow(paperWidthInches, 2) + pow(paperLengthInches, 2));

    out.println("The perimeter of a letter-size sheet of paper is " + perimeter + " inches.");
    out.println("The length of its diagonal is " + diagonal + " inches.");
  }
}