Swati has three dolls. She names them as Reena, Teena, and Meena. She then takes a metre scale and measures their heights. She observes that:
I. Reena is taller than Teena by 5 cm.
II. Meena is shorter than Reena by 4 cm.
If the height of Meena is 0.55 m, then Meena is taller than Teena by _________ cm.