Int object is not callable

Question

import math

a=int(input('Enter the 1st num:'))
b=int(input('Enter the 2nd num:'))
c=int(input('Enter the 3rd num:'))
if (a+b)>c and (b+c)>a and (c+a)>b:
s= (a+b+c)//2
#s=round(s,1)
i=math.sqrt(s*(s-a)(s-b)(s-c))
print (i)

else:
print("Triangle is not possible")

Answer 1

i=math.sqrt(s*(s-a)*(s-b)*(s-c))
You need to add the multiply operator between ()()() they don't multiply like regular mathematics without it in programming.

Answer 2

Так между скобок ставь *