Measuring the Earth

The video explores how Abu Rehan al Beruni, a Persian scholar, accurately measured Earth's circumference using trigonometry and an astrolabe. By measuring angles from a mountain peak and applying geometric principles, Beruni calculated the Earth's radius and circumference with remarkable accuracy, demonstrating the power of simple mathematics in solving complex problems.

What was the approximate circumference of the Earth that Beruni deduced?

How accurate was Beruni's measurement of the Earth's circumference?