Who was the first to measure the earth’s radius?

🧠 Explanation:

Eratosthenes was the first to measure Earth’s radius, using geometry. For history students, this highlights ancient science, making it a key topic for studying astronomy, mathematics, and history. Eratosthenes advanced knowledge. Understanding this clarifies scientific progress. It’s essential for analyzing history, astronomy, and mathematics. Studying his measurement offers insights into how ancients calculated Earth, crucial for history, astronomy, and science.