Food, figures, formulas and fun come together in The Perfect Sausage, the latest addition to the popular series of Murderous Maths paperbacks. As part of our culinary explorations, we learn how to calculate the volume and surface area of the sausage itself, and how to determine the relationship between cuts and pieces when dividing a pizza. The jokes are frequent and usually quite good. Straying beyond the kitchen, there is an intriguing algorithm for naming the day of the week for any date and for ascertaining the volume of a prolate ellipsoid (or rugby ball). The Perfect Sausage costs pound;4.99 and is published by Scholastic.