At least 10 meter of red carpet is required; This can only be known by the aspect ratio of the clothing store. If there are steps, you should know the length, width and height of the steps to determine.

Extended data:

An 80-square-meter house usually has many combinations. The area of a rectangle is long x wide.

For example, 8m× 10m = 80m2.

There are also 4m× 20m = 80m2.

If it is a house, there must be multiple spaces, so it is the sum of all the space areas. In general, if a house has a shared area, that is, corridors, elevators and the like should be removed, that is, the actual use area of the house. 80 square meters on the property certificate does not necessarily mean that the indoor area of your home is 80, generally less than 80.