Skip to main content
guest
Join
|
Help
|
Sign In
appliedmath
Home
guest
|
Join
|
Help
|
Sign In
Wiki Home
Recent Changes
Pages and Files
Members
AREA FORMULAS
square
= a 2
rectangle
= ab
parallelogram
= bh
trapezoid
= h/2 (b1 + b2)
circle
=
pi
r 2
ellipse
=
pi
r1 r2
Examples
Square: The area formula of a square is area= a^2.
Both side lenghts of the square is 9.
To find the area you go (area=9^2) or (area=9 sqared).
Therefore the area of a square is 81 square units.
Rectangle: The area formula of a rectangle is area = lw, (length times the width)
If your length is 5 and width is 6
To find the area you go (area=5*6)
Therefore the area is 30 square units.
Parallelogram: The area formula for parallelogram is area= bh, (base times the height).
If your base is 9 and the height is 5.
To find the area you go area=(9*5).
Therefore the area is 45 sqaure units.
Trapezoid: The area formula for a trapezoid is area= (b1+b2)/2*h, ( base1+base2 divided by 2 times the height).
If base1 is 10 and base 2 is 5 and the height is 9.
To find the area you go area=(10+5/2*9).
Therefore the area is 67.5 square units.
Circle: The area formula for a circle is area=(pi)r^2), (pie)(r squared)
If the radius of the circle is 12.
To find the area you go area=(pi)(12^2).
Therefore the area of a circle is 452.16 square units.
Ellipse The area formula for a circle is (pi)(r1*r2), (pie)(times radius1 times radius2)
If radius1 is 5 and radius2 is 10.
To find the area you go area=(pi)(5*10).
Therefore the area of an ellipse is 157 square units
gears_1.gif
Download
0
1
…
0
Tags
No tags
Notify
RSS
Backlinks
File Details
Filename
gears_1.gif
Size
4.04 KB
Type
GIF Image (image/gif)
Uploaded
Apr 19, 2007 by
biggmaxx
File Usage
Search
Filter
All Types
Pages
Files
Templates
Active
Wanted
Orphaned
Name
Size
Type
By
Date
No content found.
Preview
Turn off "Getting Started"
Home
...
Loading...
