Python 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:43:08) [MSC v.1926 32 bit (Intel)] on win32
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>>> PI=3.14
>>> radius=float(input("please enter radius of circle"))
please enter radius of circle1.1
>>> area=PI*radius*radius
>>> print("area of circle= ",area)
area of circle=  3.7994000000000008
>>> 