num_pages: 32
description: Sir Cumference, Lady Di of Ameter, and Radius are back in their second Math Adventure! This time, a potion has changed Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles.
language: English
title: Sir Cumference and the Dragon of Pi
titlecomplete: Sir Cumference and the Dragon of Pi (A Math Adventure)
genres: Childrens, School, Teaching, Geometry, Education, Mathematics, Picture Books, Fiction, Dragons, Fantasy
ratings_count: 1452
series: Charlesbridge Math Adventures, Sir Cumference
publisher: Charlesbridge