Prentice Hall Geometry

11-5 Volumes of Pyramids and Cones

Objective

To find the volume of a pyramid and of a cone

A Solve It problem demonstrates finding volumes of pyramids.
Image Long Description

In the Solve It, you analyzed the relationship between the volume of a prism and the volume of an embedded pyramid.

Essential Understanding The volume of a pyramid is related to the volume of a prism with the same base and height.

Because of Cavalieri's Principle, the volume formula is true for all pyramids. The height h of an oblique pyramid is the length of the perpendicular segment from its vertex to the plane of the base.

An oblique pyramid has height from the top vertex meeting a plane through the base at a right angle.

Oblique pyramid


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Table of Contents

Prentice Hall Geometry Chapter 1 Tools of Geometry Chapter 2 Reasoning and Proof Chapter 3 Parallel and Perpendicular Lines Chapter 4 Congruent Triangles Chapter 5 Relationships Within Triangles Chapter 6 Polygons and Quadrilaterals Chapter 7 Similarity Chapter 8 Right Triangles and Trigonometry Chapter 9 Transformations Chapter 10 Area Chapter 11 Surface Area and Volume Chapter 12 Circles Skills Handbook Reference Visual Glossary Selected Answers Index Acknowledgments