Rectangle
A rectangle is a four-sided polygon where the opposite sides are equal in length.

Area
Area (A) is the number of square units it takes to cover the surface of a shape. Area is expressed in square units such as cm², in², or ft².

In the diagram below, the

shaded part

of the rectangle is the area.

Perimeter
Perimeter (P) is the distance around a closed, flat figure. Perimeter is expressed in units such as yd, mm, or mi.
The perimeter of a rectangle is the sum of its four sides.
In the diagram below, the blue border is the perimeter of the rectangle.

l = length w = width A = area P = perimeter

Area = length × width A = l w Perimeter = l + l + w + w P = 2 (l + w)

Example 1:

Find the area. Answer with proper units. To represent m ², use "sq m". Sample answer:5 sq m.

Area of either Rectangle= Perimeter of Black Rectangle= Perimeter of Green Rectangle=

Black Rectangle			Green Rectangle
A r e a
A	=	l w	A	=	l w
	=	(3 cm)(4 cm)		=	(2 cm)(6 cm)
	=	12 cm2		=	12 cm2
P e r i m e t e r
P	=	2 (l + w)	P	=	2 (l + w)
	=	2 (3 cm + 4 cm)		=	2 (2 cm + 6 cm)
	=	2 (7 cm)		=	2 (8 cm)
	=	14 cm		=	16 cm

The answer is

Area of either Rectangle= Perimeter of Black Rectangle= Perimeter of Green Rectangle=