I need help quickly!

In Java

Exercise 1. Write a program that displays the dimensions, perimeter, and length of the diagonal of a letter-size (8.511 inches) sheet of paper in millimeters. There are 25.4 millimeters per inch. Use constants (the final keyword) and comments in your program. In essence, this program will perform calculations of these values using these constants and display the results to the console in whatever format you deem appropriate. No user interaction is needed