Python Program to find the area of a circle using the function

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In this program, you will learn how to find the area of a circle using the function in Python.

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area = 3.14 * r * r

Example: How to find the area of a circle using the function in Python.

def findarea(r):
    area = 3.14 * r * r
    return area


r = int(input("Enter radius of a circle:"))
area = findarea(r)
print("Area of a circle is: ", area)

Output:

Enter radius of a circle:3
Area of a circle is:  28.259999999999998