Surface area and Volume of a cylinder

Posted by on Monday, May 28, 2012 Under: Math Geometry and Measurement
Surface area of a cylinder 

Definition: The number of square units it takes to exactly cover the surface of a cylinder.

 Try this Drag the orange dot to the left to "unroll" the cylinder.

 Volume enclosed by a cylinder 
 
 Definition: The number of cubic units that will exactly fill a cylinder
Try this Drag the orange dot to resize the cylinder. The volume is calculated as you drag.


 

Since the end (base) of a cylinder is a circle, the area of that circle is given by

Multiplying by the height h we get

where:
π  is Pi, approximately 3.142
r  is the radius of the circular end of the cylinder
h  height of the cylinder

source :  http://www.mathopenref.com 

In : Math Geometry and Measurement 

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