How to output this code

Question

a=10
b=(int(a) * int(a))
print(b+"Hello")

Why i cant output this code?
I want output=100Hello
It shows some kind of error when i can't make int+string

Answer 1

correct code:

a = 10
b = a * a
print(str(b) + "Hello")

Answer 2

a = int(input("Enter a number"))
b = a * a
print("Hello" + str(b))

Answer 3

And how make a as input.. I mean this:
a=input
b=a * a
print("Hello" + str(a))

Answer 4

Ok thanks :) Helped....