Final answer:
The approximate distance between the southern tip of South America and the southern tip of Africa is between 4,600 miles and 7,000 miles.
Step-by-step explanation:
The approximate distance between the southern tip of South America and the southern tip of Africa can be calculated using the given information. Since the grid represents 0 feet as green shading and the distance between each shading is not mentioned, we cannot directly calculate the distance. However, we can make an estimation based on the known distances of red and blue shading.
According to the information, red shading represents 22,841 feet and blue shading represents 29,029 feet. Since most continents contain green and yellow shading, we can assume that the distance represented by green shading is less than or equal to 22,841 feet. Therefore, the approximate distance between the southern tip of South America and the southern tip of Africa would be less than 29,029 feet, but more than 22,841 feet.
Converting the distance to miles, we can estimate that the approximate distance between the southern tip of South America and the southern tip of Africa is between 4,600 miles and 7,000 miles.