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. Show all your work and round your answer to the nearest tenth.
show how you did it
The actual height is 16 feet and the estimated height is 18 feet.
To find the percent error, we will use the formula:
Percent Error = (|Actual - Estimated| / Actual) * 100
Calculating:
Percent Error = (|16 - 18| / 16) * 100
Percent Error = (|-2| / 16) * 100
Percent Error = (2 / 16) * 100
Percent Error = 0.125 * 100
Percent Error = 12.5
Therefore, Teresa's percent error is 12.5%.