The perimeter is the distance around the outer limits of any two dimensional object.
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To calculate the perimeter of any rectangle, just use the basic definition of perimeter: in this case, you just add the lengths of the four sides.
The circumference is the distance around a closed curve. Circumference is a special perimeter.
"Pi" is a mathematical term for 3.1415926460.. but used as 3.14 to find either the area,circumference,or perimeter of a circle.....
a four side figure with equal measure of all sides
The perimeter of a polygon is not generally equal to the number of square units contained in its interior, which is the definition of the area of the polygon, not of its perimeter. By coincidence, the area and perimeter of a square four units on each side have the same magnitude, 16, but the perimeter is 16 units and the area is 16 square units .