Question

tommy is painting his bedroom and measured the walls to determine how much paint he needs. tommy estimated one wall to be 15 feet long. when tommy measured the wall, it was 12 feet long. what is the percent error in tommys measurement? %

Explanation:

Step1: Calculate absolute error

$\text{Absolute Error} = |\text{Estimated Value} - \text{Actual Value}| = |15 - 12| = 3$

Step2: Compute percent error

$\text{Percent Error} = \frac{\text{Absolute Error}}{\text{Actual Value}} \times 100\% = \frac{3}{12} \times 100\% = 25\%$

Answer:

25