1. Write a program in Python that calculates the area of a rectangle. Use this formula: area = hw. Your program will have in-line documentation (a header and in-line comments). Output your answer in meters. Name your program rect_area.py

2. Write a program in Python that calculates the perimeter of a rectangle. Use this formula: perimeter = 2h + 2w. Your program will have in-line documentation (a header and in-line comments). Output your answer in meters. Name your program rect_perimeter.py

3. Write a program in Python that calculates the area of a triangle. Use this formula: area = ½bh. Your program will have in-line documentation (a header and in-line comments). Output your answer in meters. Name your program tri_area.py

4. Write a program in Python that calculates the velocity of a baseball thrown in space. Use this formula: velocity = d/t. Your program will have in-line documentation (a header and in-line comments). What unit should you use? Name your program velocity_calc.py

5. The value PI is more interesting than 3.14. Python provides support for this in a library called math. Calculate the circumference of a circle. Use this formula: circumference = 2PIr. Use the math library to help you with PI. Your program will have in-line documentation (a header and in-line comments). What unit should you use? Give your program an appropriate name.

To import the math library, try this:

import math        #import the math library.  THIS MUST BE AT THE TOP OF YOUR CODE.

print(math.pi)    #see, math.pi is a VALUE!

6. Convert a temperature given in Fahrenheit to Celsius. Use this formula Celsius = 5/9 (F - 32). Your program will have in-line documentation (a header and in-line comments). What unit should you use? Give your program an appropriate name.

A new idea to add to your toolkit:

7. How does the round() work in Python? Go back to your first problems, and make the output more human friendly with round(). Take 1 of your solutions to the first set of problems, and implement the round function. Add '_ROUND' to the file name. You can use the round function like this:

round(3.8)

# or

number = 5.9

round(number)