1. A regular tetrahedron whose altitude is 18 in., is cut by a plane parallel to its base, 12 in. from the base. Find the ratio of the volume of the tetrahedron cut off by the said plane to the volume of the original tetrahedron. Also, find the ratio of their base areas and the ratio of their base edges.

1. A regular tetrahedron whose altitude is 18 in., is cut by a plane parallel to its base, 12 in. from the base. Find the ratio of the volume of the tetrahedron cut off by the said plane to the volume of the original tetrahedron. Also, find the ratio of their base areas and the ratio of their base edges.

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter9: Surfaces And Solids

Section9.3: Cylinders And Cones

Problem 36E: For a right circular cone, the slant height has a measure equal to twice that of the radius length...

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