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Mathematics, 30.03.2021 19:30, Ree0628
A regular triangular pyramid has a base and lateral faces that are congruent equilateral triangles. It has a lateral surface area of 81 square feet. What is the surface area of the regular triangular pyramid?
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Answers: 2
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A regular triangular pyramid has a base and lateral faces that are congruent equilateral triangles....
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