Given the task definition, example input & output, solve the new input case.
In this task, you are given a country name, and you need to return the country's surface area in terms of square kilometers. Up to two decimal places are allowed in your answer.
Example: Angola
Output: 1246700.00
Surface area of the given country Angola is 1246700.00 square-kilometer

New input case for you: Vietnam
Output:
331689.00