What do you do to find a perimeter?

Answer 1

Depends what shape you're looking for. Generally, if it has two or more sides and you know what they are, just add them together. If it's a circle we're talking about, and you know the radius, I believe the equation is 2πr.

If you want to find the perimeter, you just have to add the the sides together. For example, if you are measuring the perimeter for a square (with equal sides) then you just have to find the length for one side and multiply it by four. If you want to do it for an irregular square, then you add the length of the sides together. In algebra, they sometimes make you find the length of a side giving you the whole perimeter and the measurement of one or a few other sides, but they might leave one side as x or y or any other variable.