Help me in solving PYTH09 problem

Problem Link: CodeChef: Practical coding for everyone
Learning course: Learn Python

My code

# Update the '_' below to solve the problem

print(11 *13)          # Area of the rectangle

print(11 * (11+13))    # Perimeter of the rectangle

My issue

The formula for perimeter is 2*(length + width) you have used 11 instead of 2