Solution: What is the upper base edge of the frustum of a regular triangular pyramid?

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 m. The upper base is 8 m above the lower base. What is the upper base edge in meters?

What is the upper base edge of the frustum of a regular triangular pyramid?

Problem Statement: CE Board November 1995

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 m. The upper base is 8 m above the lower base. What is the upper base edge in meters?

Problem Answer:

The upper base edge of the frustum of a regular triangular pyramid is 3 m.

Solution:

Online Questions and Answers in Solid Geometry


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