Question

Write a class named Circle that holds the radius of a circle in a private variable. As part of it's public interface, include a an initializer method that initializes the radius to 0. Include an accessor and mutator for setting and getting the radius. Finally, include a method for returning the area of the circle. The area of a circle is Pl times radius squared. Use 3.14159 for Pl.

Python please. thanks

Answer 1

Solution:-
Python 3 code:-

# Class Circle
class Circle:
# Initializer method
def __init__(self):
# Initializing radius as 0 to the private variable
self.__radius = 0
# Accessor method
def getradi(self):
# getting the radius of the circle
return self.__radius
# Mutator method
def setradi(self,radi):
# setting the radius of the circle
self.__radius=radi
# Area method
def area(self):
# Return the area computed
return(3.14159*(self.__radius**2))

# Instanitate object of Circle class
Circle_obj = Circle()
# Calling mutator method to set radius
Circle_obj.setradi(5)
# Printing the area computed
print('Area of circle is ',Circle_obj.area())

Code snapshot:-

Output snapshot:-