Question

The students measured length during a science experiment,they got 12 cm.But the actual measurement was 14.25cm.what was the percent error?

Answer 1

Percent error = 15.79%

Explanation:

Given the following data;

Experimental value = 12cm

Actual value = 14.25cm

To find the percentage error;

Percent error can be defined as a measure of the extent to which an experimental value differs from the theoretical value.

Mathematically, it is given by this expression;

`Percent \; error = \frac {experimental \;value - actual \; value}{ actual \;value} *100`

Substituting into the equation, we have;

`Percent \; error = \frac {12 - 14.25}{14.25} *100`

`Percent \; error = \frac {2.25}{14.25} *100`

`Percent \; error = 0.1579 *100`

Percent error = 15.79%