Added documentation and information to the programs

homework06/git-practice/circle1.py

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+# Program circle1.py
+
+startUpMessage = '''
+This program calculates the area of a circle. 
+
+'''
+
+print(startUpMessage)
+
+import math
+PI = math.pi
+
+radius = float(input("Enter the radius of a circle "))
+
+area = PI * radius**2
+
+print(f"The area is {area:.2f}")
+print("\n")

homework06/git-practice/rectangle01.py

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+# Program rectangle01.py
+
+startUpMessage = '''
+This program calculates the area of a rectangle. 
+
+'''
+
+print(startUpMessage)
+
+length = float(input("Enter a value for the length "))
+width =  float(input("Enter a value for the width  "))
+
+areaOfRectangle = length * width
+
+print(f"Area = {areaOfRectangle:.1f}")
+print("\n")

homework06/git-practice/rectangular-solid01.py

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+# Program rectanglar-solid.py
+
+startUpMessage = '''
+This program calculates the volume of a rectangular solid. 
+
+'''
+
+print(startUpMessage)
+
+length = float(input("Enter a value for the length "))
+width =  float(input("Enter a value for the width  "))
+height = float(input("Enter a value for the height "))
+
+volumeOfRectangle = length * width * height
+
+print(f"Volume = {volumeOfRectangle:.1f}")
+print("\n")

homework06/git-practice/sphere1.py

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+# Program sphere1.py
+
+startUpMessage = '''
+This program calculates the volume of a sphere. 
+
+'''
+
+print(startUpMessage)
+
+
+import math
+PI = math.pi
+
+radius = float(input("Enter the radius of a sphere "))
+
+
+volume = 4 / 3 * PI  * radius**3
+
+print(f"The volume of the sphere is {volume:.2f}")