VOLUME OF A CYLINDER

Many objects are made in the form of a cylinder. Coke cans, water pipes,

gasoline storage tanks, boilers, and silos are only a few of the many cylinders you

see everyday. You should be able to think of at least five other examples of

cylinders.

You may think of a cylinder as being made by

piling one circular base on top of another

until the height you want is reached.

For example, if you stack a group of coins on top of each other you will have a

cylinder. A stack of quarters will be a cylinder with a radius of about 1/2 inch.

You can say that the volume of a cylinder is the area of the base times the

height.

Volume Area x Height

Since we already know that the area = π r2 the formula for the volume of a

cylinder is written:

Volume = r π 2h

r

Of course, when you use the formula to find the volume of the cylinder, you must

make certain that r and h are in the same units of measurement.

SOLVE:

Find the volume of a cylinder if r = 5 inches and h = 12 inches.

V = π _______________ x ________________

π = 3.14

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