I want to know the answer to the following question:
How many square kilometers was Richmond at the start of the 20th century?
All the background I'm provided with is that "By the beginning of the 20th century, the city's population had reached 85,050 in 5 square miles (13 km2), making it the most densely populated city in the Southern United States.". Is that enough to answer the question?
Answer: yes