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Python: calculating the area of circle

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You can calculate the area of circle with and without using any variable. Both of these approaches are discussed below.

Without using variable:-
print (22.0 / 7) * (float(raw_input("Enter radius of the circle: ")) ** 2)


With variable:-
radius = float(raw_input("Enter radius of the circle: "))
print (22.0 / 7) * (radius ** 2)

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