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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.
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.