Concept in Definition ABC

Contour of a surface or figure and the measure of its contour

The term perimeter refers to the contour of a surface or figure and also to the extent that said contour is observed..

Sum of all its sides

In more informal terms, the perimeter, in any figure, will be the sum of all sides of this. From what has been said, then, it follows that the perimeter will allow the calculation of the boundary of a surface, a fact that is usually very useful in various settings and contexts.

Because, for example, if someone's particular need is to provide greater protection to their home or to his field, the fact of knowing the perimeter that that field or house, it will make it much simpler and easier to calculate how much material we need to build a fence around them and fence them in order to obtain the safety that is desired.

Calculation of the perimeter

So, to calculate any perimeter it will be a condition without equanom know the length of all sides. The perimeter of a square in which each of its sides measures 4 centimeters will be 16 centimeters, that is, the square has four visible sides, the calculation is very easy: 4 + 4 + 4 + 4 = 16.

On the other hand, it is also important to know the value of a perimeter in question because, in some situations, it can help us to know some unknown data, such as the length of one of its sides. In this case, the calculation is also very simple, having to apply the well-known rule of three simple.
Example, if we know that the perimeter of a triangle is 16 centimeters and that the length of two of its sides is, 4 and 3, the third in question will measure 9 centimeters.

Military: a relevant area in defense and security matters

On the other hand, in the military field, the concept is widely used since it designates a relevant area in terms of defense and security, or failing that to an area that turns out to be highly valued because there are a installation of utmost importance to the military.
For example, these areas have rigorous military custody and it will certainly be difficult to outflank it and cross it if you do not have the proper authorization to do so.

Generally, there are soldiers covering the entire perimeter of that area and if an intruder approaches, they will proceed to intercept him to find out what he is doing there.

Legal: restriction that an individual has to approach a place or person

In another area where the word also has a recurring use, it is at the judicial level since it is common for this terminology to be used when you want to indicate a restriction that an individual has to approach a place or a particular individual residing at an address determined.
It is usually said that such a person has received from the judge a restraining order to approach another and therefore will not be able to cross a certain perimeter that has been set by the law. If he does, a punishment will fall on him and of course he will be punishable by such action.

Cases of violence domestic violence, where, for example, one of the spouses exercises direct violence against the other, and also against their children, they often trigger these types of perimeter restriction requests to get closer to them. The lawyer defending the victim usually asks for this provision to the judge who understands the case because there is concrete evidence that his client may be the object of a serious attack that puts in risk your health and your life.

Unfortunately, in recent times, as a consequence of the increase in cases of gender violence, these requests have multiplied.