How to calculate area of a circle in Python

To find the area of a circle in Python, you can use the following program:

import math

radius = float(input("Enter the radius of the circle: "))
area = math.pi * (radius**2)
print("The area of the circle is", area)

In this program, we first prompt the user to enter the radius of the circle using the input() function, and then convert the input to a float using the float() function. We then import the math module to access the value of pi, and use the formula for the area of a circle, which is pi times the radius squared, to calculate the area of the circle. Finally, we use the print() function to display the result to the user.

Note that the area variable in this program will store the area of the circle as a float value. If you want to output the area as an integer, you can use the int() function to convert the result to an integer before printing it.