Question

what is the approximate width in millimeters of the inside of the washer, as measured by the meter stick?

Explanation:

Since the actual measurement values from the meter - stick in the image are not provided in text, we cannot perform a calculation. However, if we assume we could read the measurement:

Step1: Identify the measurement on the meter - stick

Locate the starting and ending points of the inside - width of the washer on the meter - stick.

Step2: Calculate the difference

Subtract the starting value from the ending value to get the width. If the starting value is $x$ mm and the ending value is $y$ mm, the width $w=y - x$.

Since we don't have the actual values from the image, we can't give a numerical answer. But if we could read the values and say the starting point was at 5 mm and the ending point was at 15 mm:

Answer:

10