Python3 calculates the area code of the triangle

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The following example is to calculate the area of a 3-angle shape by inputting the length of the 3-side by the user:

# -*- coding: UTF-8 -*-

# Filename : test.py
# author by : www.w3cschool.cn

a = float(input(' The input 3 Angle of the first 1 Side length : '))
b = float(input(' The input 3 Angle of the first 2 Side length : '))
c = float(input(' The input 3 Angle of the first 3 Side length : '))

#  Calculate half perimeter 
s = (a + b + c) / 2

#  Calculating area 
area = (s*(s-a)*(s-b)*(s-c)) ** 0.5
print('3 The angular area is  %0.2f' %area)

The output result of executing the above code is:

$ python test.py 
 The input 3 Angle of the first 1 Side length : 5
 The input 3 Angle of the first 2 Side length : 6
 The input 3 Angle of the first 3 Side length : 7
3 The angular area is  14.70

conclusion

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