Geometry
Perimeter of a square
The rectangle formula with length and width equal, which collapses to four times one side.
The Formula
P = 4 x side
The rectangle formula with length and width equal, which collapses to four times one side.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| P | Perimeter | metres | Distance around the square. |
| side | Side length | metres | Any one of the four equal sides. |
What Each Symbol Means
Pmetres
Perimeter
Distance around the square.
sidemetres
Side length
Any one of the four equal sides.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate the perimeter of a rectangle page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate The Perimeter Of A Rectangle, filed under Math. Every number the guide produces comes from substituting into this one line.