Basic Math and Pre-Algebra Workbook For Dummies, with Online Practice, 3rd Edition
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To find the volume of a prism or cylinder, you can use the following formula, where Ab is the area of the base and h is the height:

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Practice questions

  1. Find the volume of a prism with a base that has an area of 6 square centimeters and a height of 3 centimeters.
  2. Figure out the approximate volume of a cylinder whose base has a radius of 7 millimeters and whose height is 16 millimeters.

Answers and explanations

  1. 18 cubic centimeters
    PREALGEBRA_3402
  2. Approximately 2,461.76 cubic millimeters

    First, use the area formula for a circle to find the area of the base:

    PREALGEBRA_3403

    Plug this result into the formula for the volume of a cylinder:

    PREALGEBRA_3404

About This Article

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Mark Zegarelli is a math and test prep teacher who has written a wide variety of basic math and pre-algebra books in the For Dummies series.

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