3 PerimeterThe perimeter is the distance around a two-dimensional object.The perimeter of a polygon can always be calculated by adding all the length of the sides together.
4 Perimeter Square = 4SThe perimeter of a square is the distance around the outside of the square. A square has four sides of equal length.The formula for finding the perimeter of a square is:4S (Length of a Side)
5 Perimeter Square Example: Find the perimeter of a square with sides that measure 25 m.Solution:P = 4SP = 4 (25m)P = 100 mSo, the perimeter is 100 m.
7 Perimeter Rectangle Example: Find the perimeter of a rectangular field of length 45 m and width 35 m.Solution:P = 2 (L + W)P = 2 ( )P = 2 (80)P = 160So, the perimeter is 160 m.
8 Circumference Circle Circumference = 2π r Circumference = π d P stands for the perimeter,r stands for the radiusπ is the mathematical constant pi (π = )d stands for the circle's diameter (twice the radius of a circle)