nevaehkyari06 nevaehkyari06

24-03-2020
Mathematics

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The area of the base (B) of a triangular pyramid is 28 cm. The perimeter (p) is 20 cm, and the slant height (S) is 5 cm. Determine the pyramid's surface area.

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kenlingdad kenlingdad

24-03-2020

Answer:

78 cm²

Step-by-step explanation:

SA = BA + p x Sh /2

SA = 28 + 20 x 5 / 2 = 78

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