import math a, b, c = map(eval, input().split()) circumference = a + b + c S = circumference / 2 area = math.sqrt(S * (S - a) * (S - b) * (S - c)) print('circumference=%.2f area=%.2f' % (circumference, area))
import math a, b, c = map(eval, input().split()) circumference = a + b + c S = circumference / 2 area = math.sqrt(S * (S - a) * (S - b) * (S - c)) print('circumference=%.2f area=%.2f' % (circumference, area))
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