In Python: Write a function called pizza_cost that returns the cost per square inch of a circular pizza given its diameter in inches and price. The area of a circle is area =nr2 Hint: Use 3.14159 for...

Extracted text: In Python: Write a function called pizza_cost that returns the cost per square inch of a circular pizza given its diameter in inches and price. The area of a circle is area =nr2 Hint: Use 3.14159 for the value of n Write a main() function in your file to exercise your function to show that it works correctly. Your test implementation should not rely on visual inspection to determine if the tests pass.