I'm curious about this question can someone please help me out.

what is the unit measure of a button in mg?

It depends on the size of the button.

Well you see bobpursley I have this four options..

1. 1.14mg
2. 0.014mg
3. 140mg
4. 14mg

But since Milligram is about the mass of one human hair, then I'm assuming a button is 140mg am I correct?

Most shirt buttons are about 1.0 cm dia x 0.2 cm thick. That would make the volume 0.15 cm^3 and (assuming a specific gravity of 1) the mass would be about 0.15 g or 150 mg. Of course, there are smaller and larger buttons, but 140 mg is the best answer.

To determine the unit measure of a button in milligrams (mg), we need to consider the contextual meaning of "unit measure."

If we're referring to the weight or mass of a single button, then the unit measure of the button in mg would be the weight of one button expressed in milligrams. To obtain this information, you can follow these steps:

1. Weigh a single button using an accurate weighing scale. Make sure the scale measures in milligrams.
2. Record the weight of the button in mg.

For example, if a button weighs 10 mg, then the unit measure of that button in mg would be 10 mg.

On the other hand, if the term "unit measure" refers to a standard size or dimension of a button, then milligrams (mg) would not be the appropriate unit of measure. In that case, other units like millimeters (mm) or inches (in) would be more suitable. However, without further clarification about the context of the question, it is difficult to provide a more accurate answer.