Identify the name of the polygon and deduce the distance round the floor, given side length AB is 4m.

The polygon has 8 sides (A, B, C, D, E, F, G, H).

A polygon with 8 sides is an octagon. Given the context of construction and the subsequent questions, it is a regular octagon.

The side length AB is given as $4 \text{ m}$.
The perimeter of a regular octagon is given by $P = n \times s$, where $n$ is