Write a program that asks the user to enter the radius of a circle and then calculates and displays the area using the formula: Area = π × r² Use 3.14159 for π. Source Code: # Circle Area Calculator radius =       1     (input(“Enter the radius of the circle: “)) pi =        2        area =     3    *       4      **     5    print(f”The area of the circle is: {area:.2f}”)

Write a program that prompts the user to enter a string. The program should count and display the number of vowels (a, e, i, o, u) that appear in the string, regardless of case. Source Code: def count_vowels(text):     vowels = ”       1      ”     count =      2         for char in text.lower():         if char in         3       :             count += 1     return        4        user_input = input(“Enter a string: “) vowel_count =             5           (user_input) print(“Number of vowels:”, vowel_count)

Write a program that asks the user to enter a password. The password must be at least 8 characters long and contain at least one uppercase letter, one lowercase letter, and one digit. The program should validate the input and display an appropriate message. Source Code: def is_valid_password(password):     has_upper = any(char.isupper() for char in           1          )     has_lower = any(           2             for char in password)     has_digit = any(char.isdigit() for char in password)     return      3     (password) >= 8 and has_upper and has_lower and has_digit def main():     password = input(“Enter a password: “)     if              4              (password):         print(“Password is valid.”)     else:         print(“Invalid password. It must be at least 8 characters long and contain at least one uppercase letter, one lowercase letter, and one digit.”)        5     ()

One-half liter of water is the same volume as 

A controlled experiment comparing two situations has all identical influencing factors except the 

Procedures operate on data items that are separate from the procedures.

A 5 km span is the same as how many meters?

Write a class named Employee that has the following data attributes: __name (employee name) __id_number (employee ID number) __department (employee department) __job_title (employee job title) The class should include an __init__ method to initialize the attributes and should also include accessor (get) and mutator (set) methods for each attribute. Write a program that prompts the user to enter information about an employee and then displays the stored data. Source Code: class Employee:     def __init__(         1        ,           2        ,            3         ,           4           ,          5        ):         self.__name = name         self.__id_number = id_number         self.__department = department               6     .__job_title = job_title    def set_name(self, name):         self.__name = name   def set_id_number(self, id_number):         self.__id_number = id_number   def                7              (self, department):         self.__department = department   def set_job_title(self, job_title):         self.__job_title = job_title   def get_name(     8     ):         return self.__name   def             9           (self):         return self.__id_number   def get_department(self):         return self.__department   def get_job_title(self):         return self.__job_title # Program to use the class name = input(“Enter employee’s name: “) id_number = input(“Enter employee ID number: “) department = input(“Enter department: “) job_title = input(“Enter job title: “) emp = Employee(name, id_number, department, job_title) print(“\nEmployee Information:”) print(“Name:”, emp.get_name()) print(“ID Number:”, emp.get_id_number()) print(“Department:”,                 10                 ()) print(“Job Title:”, emp.get_job_title())

What will be the output after the following code is executed?import matplotlib.pyplot as pltdef main(): x_crd = [0, 1 , 2, 3, 4, 5] y_crd = [2, 4, 5, 2] plt.plot(x_crd, y_crd)main()

What will be the value of the variable string after the following code executes?string = ‘abcd’string.upper()