MEASUREMENT +

 

 

Area

 

 

Area = Length × Width

To find area multiply unit x unit, which squared unit (unit2)

https://www.mathsisfun.com/definitions/images/square-m.gif
A square that is 1 meter on each side
is 1 square meter.

Square Meter

The square meter is the basic unit of area of the Metric System.
Area of a rectangle is length by length or length by width so:

 

 

The unit is meters × meters, which is written m2 (square meters). https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRlswc1BPM2_gX8GsUfmLjL1IuJXpqHs-plJEV-5p7xhUKKyU9Y

 

 

http://www.mathsisfun.com/geometry/images/area/rectangle.gif

Rectangle
Area = w × h
w = width
h = height

 

http://www.mathsisfun.com/geometry/images/area/squar2.gif

Square
Area = a2
a = length of side

http://www.mathsisfun.com/geometry/images/area/triangle2.gif

Triangle (right angle)
Area = ½ × b × h
b = base
h = vertical height

 

http://www.mathsisfun.com/geometry/images/area/parallel.gif

Parallelogram
Area = b × h
b = base
h = vertical height

http://www.mathsisfun.com/geometry/images/area/trap.gif

Trapezoid
Area = ½(a+b) × h
h = vertical height

 

http://www.mathsisfun.com/geometry/images/area/circle.gif

Circle 
Area = π × r2 
Circumference = 2 × π × r
r = radius

Area of Rectangls and Squares

 Example: What is the area of this rectangle?

 

Example: How big is this rectangle measured in meters?
Image result for area of a square

 

It is 6 meters by 3 meters, so it is 6m × 3 m = 18 m2
Note. There are 18 squared units in the 6 by 3 rectangle.

Example: What are the areas of these two squares?

 

Find the areas http://img.sparknotes.com/figures/2/2e8a313ab87d8d9656417d9ad2b59f65/square_area.gif

 

1 you can count the amount of squared units in the squares which is 64 and 9 respectively
2. Multiply Length by Width 8x8=64squared units and 3x3=9 squared units

Example: What is the area of this rectangle?

  http://wizznotes.com/wp-content/uploads/2010/11/image089.jpg

Area of Triangle

  http://www.loisterms.com/lois8a.gif

Example: How big is this rectangle measured in meters?

  http://www.cimt.plymouth.ac.uk/projects/mepres/book7/bk7i9/s5eg2.gif

Area of a Circle

 

Example: What are the areas of these two squares?

 

http://www.virtualnerd.com/images/Tutorial/PreAlg_11_01_0013-diagram_thumb-lg.png

 

Area of Parallellograms


  http://dandumitrache.com/wp-content/uploads/2013/07/area-parallelogram.png

Example: What are the areas of the parallelogram?

 http://3.bp.blogspot.com/_t00BMBp2Qso/SXAfHssmOUI/AAAAAAAAAC8/lCPixCvnky4/s400/parallelagram+2.bmp

Area of Trapezoid

 

http://www.k6-geometric-shapes.com/images/formula-area-trapezoid.jpg

 



Example: What are the areas of the trapezoid?

 

http://www.mathatube.com/images/finding_trapezoid-045.jpg

 

 

 

Try These

Activity1 Activity2 Activity3

Learn More

Video