Medieval Zu Chongzhi established a method that would later be called Cavalieri's principle to find the volume of a sphere in the 5th century. In the 12th century, the Indian mathematician Bhāskara II used infinitesimal and used what is now known as Rolle's theorem.
Medieval Zu Chongzhi established a method that would later be called Cavalieri's principle to find the volume of a sphere in the .5th century. In the 12th century, the Indian mathematici:an Bhāskara II used infinitesimal and used what is now known as Roll,e's theorem.