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Python program to calculate circle area

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Following program shows you how to calculate circle area. In this tutorial will get circle radius from user and calculate area and prints it using following formula Area = PI X r X r

circleRadius = float(input("Please enter the radius of circle:"))
areaOfCircle = 22/7 * (circleRadius * circleRadius)
print("Area of circle is: " , areaOfCircle)

Output:

Please enter the radius of circle: 5
Area of circle is:  78.57142857142857