Question

The apothem is also the radius of the incircle of the polygon. For a polygon of n sides, there are n possible apothems, all the same length of course. The word apothem can refer to the line itself, or the length of that line.

Answer 1

What is your question?

Answer 2

so i think first of all you need to know what mean,what is an apothem ?

hope this image will help you understanding more easy your math problem