Python: A class constructed by a radius and two methods which will compute the area and the perimeter of a circle

Last update on March 28 2025 12:54:18 (UTC/GMT +8 hours)

11. Class Named Circle to Compute Area and Perimeter

Write a Python class named Circle constructed from a radius and two methods that will compute the area and the perimeter of a circle.

Sample Solution:

Python Code:

class Circle():
    def __init__(self, r):
        self.radius = r

    def area(self):
        return self.radius**2*3.14
    
    def perimeter(self):
        return 2*self.radius*3.14

NewCircle = Circle(8)
print(NewCircle.area())
print(NewCircle.perimeter())

Sample Output:

200.96                                                                                                        
50.24

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python class named Circle with an attribute for radius and methods to compute both its area and circumference.
• Write a Python class to calculate the area and perimeter of a circle, ensuring that the radius is non-negative.
• Write a Python class that includes a method to display the circle's properties (radius, area, perimeter) in a formatted string.
• Write a Python class that implements static methods to convert between circle area and radius, and to compute the perimeter from the radius.

Python Code Editor:

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