Perimeter Formulas The perimeter of any polygon is the sum of the lengths of all the sides. 4 side. To calculate a circles perimeter knowledge of its radius or.
Circumference is calculated using the formula 2p r.
Or P 2 length breadth. The term perimeter is normally used with 2-dimensional figures not three-dimensional figures such as a cube. P 5 s P 5 s In our formula 5 5 is the number of sides and s s is the length of the side that we know. The perimeter of shapes formula for each of the polygon can be given using the same variable l.