8inches
Precisely 231.675642 Metric metres long.I measured it myself with my high tech laser guided ruler.
You put in 6 pizza rolls for 55 seconds.
The total length of a US penny roll (flat, pre-use) is about 3 7/8 inches, or just barely under 9.8 cm before insertion (based on BOFA issues). Bear in mind that almost exactly 1 inch is left empty...
Cakes have been popular for thousands and thousands of years.