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Greeley [361]
3 years ago
9

A regular triangular pyramid has a base and lateral faces that are congruent equilateral triangles. It has a lateral surface are

a of 57 square centimeters. What is the surface area of the regular triangular pyramid?
Mathematics
1 answer:
dmitriy555 [2]3 years ago
6 0
57 cm^2 is equal to the lateral surface area, or the three sides in this case.

57/3= 19 cm^2 per side. Because the base is equal to the area of the side, this is the base area.

19+57= 76 cm^2 for sides+ base (total surface area)

Final answer: 76 cm^2
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