IN MATH: 1. n. distance around a figure; sum of the lengths of the sides. EX. The word perimeter comes from "peri meter" meaning "around measure."

Rectangle
The perimeter, P(L, W) = 2(L) + 2(W), or the
area, A(L, W) = (L)(W), of a rectangle.

 Width: Lenght:

is

Square
Since all sides of a square are the same length,
the length equals the width, L = W.
The perimeter is four times the lenght:
P(L, W) = 2(L) + 2(W) = 2(L) + 2(L) = 4(L)
The area is the length squared:
A(L, W) = (L)(W) = (L)(L) = L²
The perimeter, P(L) = 4(L) or the
area, A(L) = L², of a square rectangle.

 Lenght:

is

Circle
Circles are describe in terms of their radius or diameter.
The circumference is the perimeter of a circle.
The circumference,
in terms of diameter,
The area,
in terms of diameter,

 Using a radius of:      The ( or ) is:     square units or units.
 Using a diameter of:      The ( or ) is:     square units or units.

 See: FINALLY PLEASE READILY EXCUSE MY DEAR AUNT SALLY - order of operations tutorial home page Math Functions - computes distance, areas, lengths, square roots, raises to a power area.xls -- computes the areas and perimeters of rectangles, parallelograms, triangles, trapezoids, circles. area.doc -- A Word® document with area formulas for a rectangle, parallelogram, triangle, trapezoid, circle.

IN ENGLISH: 1. n. the region encircling a place or region. EX. Guard the perimeter of the camp against attack. 2. as defined above.

APPLICATION: See list 140.

Determine the perimeter of each regular polygon with sides of 13 ft.
 1. triangle 2. quadrilateral 3. hexagon 4. octagon 5. decagon 6. pentagon 7. septagon

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