1
Pi (π)
3.14
2
![card image](http://stampez.typepad.com/my_weblog/images/2008/02/11/start.jpg)
Circumference of a circle
πd (3.14 x diameter)
3
Area of a circle
πr2 (3.14 x radius squared)
4
Perimeter of a square
side + side + side + side
4s
5
Area of a square
s2
s x s
6
Perimeter of a rectangle
2length + 2width
l + l + w + w
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![card image](http://ed101.bu.edu/StudentDoc/current/ED101fa10/sjtoback/Images/rectangle.png)
Area of a rectangle
lw
l x w
8
![card image](http://www.paulbunting.net/wp-content/uploads/2011/09/triangle.png)
Perimeter of a triangle
s + s + s
9
![card image](http://bibledaily.files.wordpress.com/2011/02/coloredtriangle.png)
Area of a triangle
1/2 base x height
bh/2
10
![card image](http://etc.usf.edu/clipart/41700/41702/FC_Cylinder_41702_md.gif)
Surface area of a cylinder
2πr2 (2 x 3.14 x radius squared) + 2πrh (2 x 3.14 x radius x height)
11
![card image](http://www.abc123kidz.com/images/cylinder.gif)
Volume of a cylinder
πr2h (3.14 x radius squared x height)
12
![card image](http://www.chatt.hdsb.ca/~destephaniscr/FOV1-00116FA8/S0E010D37-0E010D37.0/Rectangular%2BPrism%2B1.gif?src=.BMP)
Surface area of a rectangular prism
2(lw) + 2(lh) + 2(wh)
13
![card image](http://easycalculation.com/area/images/big-cube.gif)
Volume of a rectangular prism
lwh
l x w x h
14
Volume of a cone
1/3 πr2h (3.14 x radius squared x height)