Python program to calculate the area of a triangle

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In this program, you will learn to calculate the area of a triangle and display it.

To understand this example, you should understand the followingPython programmingTopic:

• Python input, output, and import

• Python data types

• Python operators

If a, b, and c are the three sides of a triangle. Then,

s　=　(a+b+c)/2
area　=　√(s(s-a)*(s-b)*(s-c))

Source code

#　Use Python program to calculate the area of a triangle
a　=　5
b　=　6
c　=　7
#　Uncomment the following to input from the user
#　a　=　float(input('Enter the first side:　'))
#　b　=　float(input('Enter the second side:　'))
#　c　=　float(input('Enter the third side:　'))
#　Calculate the semi-perimeter
s　=　(a　+　b　+　c)　/　2
#　Calculate the area
area　=　(s*(s-a)*(s-b)*(s-c))　**　0.5
print('The area of the triangle is　%0.2f'　%area)

Output result

The area of the triangle is　14.70

In this program, we useHeron's formulaGiven three sides, you can calculate the area of a triangle.

If you need to calculate the area of a triangle based on user input, you can useinput() function.

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