CK-12 Geometry Concepts

(Elliott) #1

http://www.ck12.org Chapter 11. Surface Area and Volume


11.4 Cylinders


Here you’ll learn how to calculate the surface area and volume of cylinders.


What if you wanted to figure out how much paper you needed for the label of a can? How could you use the surface
area of a cylinder to help you? After completing this Concept, you’ll be able to answer questions like this one.


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CK-12 Foundation: Chapter11CylindersA


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Brightstorm:SurfaceArea ofCylinders


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Brightstorm:Volume of Cylinders


Guidance


Acylinderis a solid with congruent circular bases that are in parallel planes. The space between the circles is
enclosed. Just like a circle, the cylinder has a radius for each of the circular bases. Also, like a prism, a cylinder can
be oblique, like the one to the right.


Surface Area


Surface areais the sum of the areas of the faces. Let’s find the net of a right cylinder. One way for you to do this
is to take a label off of a soup can or can of vegetables. When you take this label off, we see that it is a rectangle

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