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  1. PI = 3.1415
  2. r = float(input())
  3. print(PI * (r * r))
  4.  
Success #stdin #stdout 0.02s 9288KB
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3.801215000000001
https://ideone.com/VY1xVg
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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