Given:
The actual measurement is 19.2 inches.
The new measurement is 18.4 inches.
To find the percent error:
So, the formula is,
[tex]\begin{gathered} \frac{Actual-New}{\text{Actual}}\times100=\frac{19.2-18.4}{19.2}\times100 \\ =\frac{0.8}{19.2}\times100 \\ =\frac{80}{19.2} \\ =4.166667 \\ \approx4.2 \end{gathered}[/tex]Hence, the percent error is 4.2%.
