between 39 and 41 inches
Roughly 14 inches, when measured on the backside from the very bottom (tail piece) up to where the body meets the neck (including the neck joint if I recall correctly)
Full Mattress - 53" X 75", which is about 137X190cm About.com has a complete list of different sizes, i will include the link below
2.5 meters
53 inches wide, 74 inches long