Question
Consider the following Python code: class
Shape:   def area(self):     return 0 class Circle(Shape):   def __ init __ (self, radius):     self.radius = radius   def area(self):     return 3.14 * self.radius * self.radius s = Shape() c = Circle(5) print(s.area()) print(c.area()) What is the output of this code?Solution
This code demonstrates polymorphism in Python. 1. Base Class Behavior: The Shape class has an area method returning 0 by default, which is inherited but overridden by the Circle class. 2. Derived Class Behavior: The Circle class redefines the area method to calculate the area of a circle using the formula πr² . 3. Output: o The first call (s.area()) invokes the area method in Shape, returning 0. o The second call (c.area()) invokes the overridden area method in Circle, calculating and returning 78.5. This demonstrates inheritance and method overriding. Why Other Options Are Incorrect: • B) 0 followed by 0: The second call correctly calculates the circle's area. • C) 78.5 followed by 78.5: The first call uses the Shape class's method, which returns 0. • D) None followed by 78.5: The area method in Shape returns 0, not None. • E) Throws an error due to missing area method in Shape: The Shape class defines the area method.
47.87% of 749.76 + 35.11% of 399.76 = √? + 23.15 × 20.87
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(?)2 = (5.99)2 + (7.88)2 + 43.99

Train 'P' travels at a speed of 45 km/h and crosses train 'Q' in 15 seconds while moving in opposite directions. Determine the speed of train 'Q' if the...
`[(7.99)^2 - (13.001)^2 + (4.01)^3]^2=` ?
A number is first increased by 35% and then decreased by 35%. If the net change in the number is 302.5, then find the original number.
A bag contains red, green, and blue balls, with a total of 16 balls. The probability of drawing two blue balls in one draw is 3/8. How many blue balls a...
35.05% of 14.87 × (13.02 – ?) + 30.19 = 188.7
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...