Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm.

What is the percent error for Diego’s measurement?

Explain or show your reasoning.

The answer is going to be 4.5%

Based on this question, we know that Diego measured the length of a pen which were to be 22cm so that we would get the actual length of the pen that is 23cm.

So what we need to do is do the percentage//which is decreasing

(22-22)/22x100

=1/22x100

=4.5%, therefore the percent error for Diego’s measurement is 4.5% because what we did was find the percentage decrease by multiplying 100 by 22 minus 22 over 22.