Question

Roger has a nail that is 12 centimeters long. He measures and records the length of the nail as 15 centimeters. What is the percent error in Roger's measurement?

Answer 1

the percent error is 25%

Answer 2

Percentage error = 25 %

Explanation:

Given : Roger has a nail that is 12 centimeters long. He measures and records the length of the nail as 15 centimeters.

To find : What is the percent error in Roger's measurement?

Solution : We have given that

Length of roger nail = 12 cm.

He measures length = 15 cm.

Error = 15 cm - 12 cm.

Error in length = 3 cm .

Percentage error =
`(Measured-exact)/(exact)*100`.

Percentage error =
`(15- 12)/(12)*100`.

Percentage error =
`(3)/(12)*100`.

Percentage error = 25 %

Therefore, Percentage error = 25 %