Ball, Johnny.

Why pi? / Johnny Ball. - New York, N.Y. : DK Pub., 2009. - 93 p. : col. ill., col. maps ; 29 cm.

"How math applies to everyday life"--Cover. Includes index.

ISBN: 9780756651640 0756651646

Subjects--Topical Terms:
Pi.
Measurement.
Mathematics.