The answer to the question about how many continents are there in the world is letter A or number seven (7). However, please note that the answer can also be letter D or number eight (8) if we are going to count Zealandia as a continent. However, for the sake of this question, we are going to stick with letter A. These are the seven continents according to their area size:
Asia which covers 44,391,162 square kilometers, Africa which covers 30,244,049 square kilometers, North America covers an area of 24,247,039 square kilometers, South America covers an area of 17,821,029 square kilometers, Antarctica covers an area of 14,245,000 square kilometers, Europe covers an area of 10,354,636 square kilometers and Australia covers an area of 7,686,884 square kilometers.