To solve this question, follow the steps:
1) Draw the segment AB = 5.5 cm using a ruler.
2) Draw the segment BC knowing that the angle ABC is 90º.
3) Draw the segment AC knowing that the angle BAC is 60º.
4) Connect the segments BC and AC.
5) Measure the length of AC using a ruler.
The triangle can be observed below:
Answer: the length of the segment AC is 11 cm.