The volume of the frustum of a regular triangular pyramid is 135 cu.m. The lower base is an equilateral triangle with an edge of 9 cm. The upper base is 8 m above the lower base. What is the upper base edge in meters?

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
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4. The volume of the frustum of a regular
triangular pyramid is 135 cu.m. The lower
base is an equilateral triangle with an edge
of 9 cm. The upper base is 8 m above the
lower base. What is the upper base edge in
meters?
Transcribed Image Text:4. The volume of the frustum of a regular triangular pyramid is 135 cu.m. The lower base is an equilateral triangle with an edge of 9 cm. The upper base is 8 m above the lower base. What is the upper base edge in meters?
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