# Three sides of the triangle is a, b and c:
a=float(input(‘Enter first side: ‘))
b=float(input(‘Enter second side: ‘))
c=float(input(‘Enter 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)
print(f’The area of the triangle is {area:.2f}’)
print(‘The area of the triangle is {0}’,format(area))
print(‘The area of the triangle is {0:.2f}’.format(area))