Teresa estimates that the height of a giraffe in a zoo is 18 feet. In fact, it is 16 feet tall. What is Teresa’s percent error? Use proportional relationships to solve the problem. Be sure to show all your work, provide your answer as a percentage, and round your answer to the nearest tenth. make it short
To find the percent error, we need to compare the difference between the estimated height and the actual height to the actual height, and then express this difference as a percentage.
Estimated height: 18 feet
Actual height: 16 feet
Difference: 18 - 16 = 2
To find the percent error, divide the difference by the actual height and multiply by 100:
Percent error = (2 / 16) * 100 ≈ 12.5%
Therefore, Teresa's percent error is approximately 12.5%.