Example: Python program to calculate the area of an equilateral triangle

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# Python program to calculate the area of an equilateral triangle

import math # Used for sqrt() function

print("Enter the side of an equilateral triangle::")

s, a = float(input()), None

# s = side
# a = area

# Calculate area of equilateral triangle
a = (math.sqrt(3) / 4) * (s * s)

# Output
print("Area of the equilateral triangle = ", a, " sq. units")