Final answer:
To calculate the percent of error, you subtract the estimated value from the actual value, take the absolute value, divide by the actual value, and multiply by 100%. In this case, the percent of error is 11.11%, which is not one of the provided options.
Step-by-step explanation:
The question asks to find the percent of error in a measurement after a student estimated a mass of 40 g and found the actual mass to be 45 g. The percent of error is calculated as the absolute value of the difference between the estimated value and the actual value, divided by the actual value, then multiplied by 100%.
Here's the formula for the percent of error:
Percent of Error = (|Estimated Value - Actual Value| / Actual Value) x 100%
Using the formula:
- Estimated Value = 40 g
- Actual Value = 45 g
- |40 g - 45 g| = 5 g
- (5 g / 45 g) x 100% = 0.1111... x 100% = 11.11
Rounding to the nearest whole number gives us approximately 11%, which is not an option in the multiple choices provided. Therefore, depending on the options and the level of precision expected, there might be a mistake in the multiple-choice options or a need for clarification.