Notes: a. Make sure to use variable names that make sense. b.Add comments to document your code. Comments are not optional and must be included. C .Use a one-line comment before each block to describe what you are doing - don't describe the code syntax, but rather the purpose of the code. These comments should effectively describe the steps in your "algorithm." D. Spell things carefully, including capitalization, since Java is fussy about that Indent things carefully Check your results! Testing your code is IMPORTANTI 1. Create a program to calculate the perimeter and area of a rectangle and a circle. 2. Calculate the word problem below. 21 11 15 1. Use the numbers on the sides of the shapes and the given radius for your calculations. 2. A man walks 20 km in 4 hours, Find his speed. Desktop