Final answer:
The percent error of Ava's estimate is 2.13%.
Step-by-step explanation:
To find the percent error, we first need to calculate the absolute error, which is the absolute value of the difference between Ava's estimate and the actual measurement.
In this case, the absolute error is:
5.62 - 5.5
= 0.12 cm.
To find the percent error, we divide the absolute error by the actual measurement and multiply by 100.
So, the percent error is (0.12/5.62) * 100
= 2.13%.