Ответ:
R=float(input())
print("%.1f" % (2*3.14*R))
print("%.1f" % (3.14*R*R))
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Answers & Comments
Ответ:
R=float(input())
print("%.1f" % (2*3.14*R))
print("%.1f" % (3.14*R*R))