Neuschwander, Cindy. <br/><br/>
Sir Cumference and the dragon of pi :  a math adventure / 
by Cindy Neuschwander ; illustrated by Wayne Geehan. 
 - Watertown, MA :  Charlesbridge,  1999. 
 - 32 p. :  col. ill ;  24 cm. 
<br/><br/> Radius, son of Sir Cumference, embarks on a quest to find the magic number known as pi in order to restore his father--who has been turned into a dragon--to his original shape. 
<br/><br/> 5.1  Follett Library Resources.  3-6 
<br/><br/><label>ISBN: </label>9781570911644 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Circle--Juvenile literature.<br/>Pi--Juvenile literature.<br/>Circle.<br/>Pi.<br/>Circle.<br/>Pi.
<br/><br/><label>Dewey Class. No.: </label>516.15 NEU/O