Surface Area and Volume of CylindersDate: 05/25/2001 at 18:40:17 From: Matt Gibbs Subject: Volume & surface area of cylinders I would like to know if you could tell me how to find the surface area of cylinders. Also, could you tell me how to find the volume of cylinders? I don't have any clue on how to get started. Please help me if you can. Thank you, Matt Date: 05/25/2001 at 22:11:01 From: Doctor Peterson Subject: Re: Volume & surface area of cylinders Hi, Matt. If you just want the formulas, you can go to our FAQ and click on Formulas. For more details, go to our search page and enter "surface area cylinder." But I'll give you the basics so you can figure it out yourself. Suppose you want to find the surface area of a soup can. Get a can opener and cut around the top and bottom and take them off. Now get a pair of shears and cut straight down the side, and flatten it out to make a rectangle. Now you have two circles and a rectangle; you know how to find their areas, so just add them together. That's all there is to it. Now, for the volume, it's just the product of the area of the base (the circle) and the height. You can picture finding the volume of a cylinder one unit high by fitting unit cubes together to cover the base; the number it will take is just the area of the base. Now multiply that by the number of layers it takes to fill the whole cylinder, which is its height. - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/ |
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