aaronludwig13 aaronludwig13

25-08-2017
Mathematics

contestada

A regular rectangular pyramid has a base and lateral faces that are congruent equilateral triangles. it has a lateral surface area of 72 square centimeters. what is the surface area of the regular triangular pyramid?

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musiclover10045 musiclover10045

25-08-2017

if i understand the question correctly:

square pyramid has 4 sides

72/4 = 18

area of each side

so a triangular pyramid has 3 sides

18 *3 = 54 square cm

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