Answer:
b) 14.3%
Explanation:
Hello,
In this case, the experimental error is computed as:
[tex]error=\frac{exp-theo}{exp} *100\%[/tex]
Whereas exp accounts for the measured value, in this case 1.4 cm, and theo the theoretical value, in this case 1.2 cm. Therefore, the result is:
[tex]error=\frac{1.4-1.2}{1.4} *100\%\\\\error=14.3\%[/tex]
Thereby, answer should be b) 14.3% (corrected).
Best regards.