Mathematics, 16.12.2019 01:31 weberalycia
The volume of the frustum of regular triangular pyramid is 135 m3. 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 m? .
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The volume of the frustum of regular triangular pyramid is 135 m3. the lower base is an equilateral...