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OpenStudy (anonymous):
Calculate the surface area of a regular triangular pyramid with the base edges of length 12 and a slant height of 12. (Hint : Remember that the base of a regular triangular pyramid must be an equilateral triangle, not necessarily congruent to the sides of the pyramid.) a) 288 b) 278.35 c) 72 d) 216 **I originally answered a) 288 and it said it's wrong**
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OpenStudy (anonymous):
278.35
OpenStudy (anonymous):
Thank you so so much!!!(:
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