Answer : Percentage error is 2%
[tex]\begin{gathered} \text{The original length of the rod is 29. 4 cm} \\ \text{The expected length of the rod is 30 cm} \\ \text{Percentage error = }\frac{\exp ected\text{ length - original length}}{\text{original length}}\text{ x 100} \\ \text{Percentage error = }\frac{30\text{ - 29.4}}{29.4}\text{ x 100} \\ \text{Percentage error = }\frac{0.6}{29.4}\text{ x 100} \\ \text{Percentage error = 0.020 x 100} \\ \text{Percentage error = 2\%} \end{gathered}[/tex]