# The accepted length of a steel pipe is 5.5 m. How do you calculate the percent error for each of these measurements?

## a. 5.2 m b. 5.5 m c. 5.7 m d. 5.1 m

Aug 13, 2017

A. -5.5%
B. 0.0%
C. 3.6%
D. -7.3%

#### Explanation:

The formula for percent error is:

% error = (x_(measured)-x_(true))/x_(true)*100%

Our ${x}_{t r u e}$ value is 5.5 m. All we do now is solve for % error by plugging in each result. The result must be two significant figures.

A. % error = (5.2 m -5.5 m)/(5.5 m)*100%=-5.5%

A. % error = (5.5 m -5.5 m)/(5.5 m)*100%=0.0%

A. % error = (5.7 m -5.5 m)/(5.5 m)*100%=3.6%

A. % error = (5.1 m -5.5 m)/(5.5 m)*100%=-5.5%