Python 3.6.3 (v3.6.3:2c5fed8, Oct  3 2017, 17:26:49) [MSC v.1900 32 bit (Intel)] on win32
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>>> import math
>>> radius = 2
>>> area = math.pi*(radius**2)
>>> print("the area of a circle is:\t%.2f"%area)
the area of a circle is:	12.57
>>> print("the radius is:\t%.2f"%radius)
the radius is:	2.00
>>> 
