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

Answer:

Percentage error = 25 %

Step-by-step 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 = $\frac{Measured-exact}{exact}*100$.

Percentage error = $\frac{15- 12}{12}*100$.

Percentage error = $\frac{3}{12}*100$.

Percentage error = 25 %

Therefore, Percentage error = 25 %

Answer 2

The percent error is 25%