math - getting a repatted generated answer in python -


i trying make program can me on finding area using radius. output weird, take look!

pi = 3.1415929203539825 print('what radius') #asking radius r = input() = str(pi) * int(r) * int(r) print("the area of circle " + str(a) + "")

when r = 5, outputs:

3.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.14159292035398253.1415929203539825

you don't need cast pi string. doing repeats string

try instead 

from math import pi r = float(input("enter radius: ")) = pi * (r**2)

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