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Hence a cylinder is a little more than | (.78 + ) of its circumscribed square right prism.

Note 13. If from a cylinder of wood whose diameter equals its altitude the largest possible sphere be cut, exactly £ of the wood will be cut away. Hence a sphere is exactly f of a cylinder whose diameter and altitude are each equal to the diameter of the sphere.

Note 14. If from a cylinder of wood the largest possible cone be cut, exactly f of the wood will be cut away. Hence a cone is exactly £ of a cylinder of equal diameter and altitude.

Note 15. If from a square right prism of wood the largest possible pyramid be cut, exactly j of the wood will be cut away. Hence a square pyramid is exactly J of a square right prism of equal base and altitude.

Note 16. The specific gravity of a liquid or solid is the ratio of its weight to the weight of an equal bulk of pure water.

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Carefully paste this sheet upon card-board; then cut out the protractor with a sharp knife and preserve it for use in measuring and in constructing angles. See pages 239, 249, 259, etc.

To avoid fine, this book should be returned on

or before the date last stamped below

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MAR 20 2002

MAR 1 8 2003

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