The actual length of the nail is 12 centimeters.
The measured length of the nail is 15 centimeters.
The difference between the actual and measured lengths is 15 - 12 = <<15-12=3>>3 centimeters.
The percent error is (3 / 12) x 100% = 25%. Answer: \boxed{25}.
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?
1 answer