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Vera_Pavlovna [14]
3 years ago
6

Use the net to find the surface area of the regular pyramid. plz, help I'm stuck.

Mathematics
1 answer:
Zepler [3.9K]3 years ago
5 0

Answer:

178.3 mm²

Step-by-step explanation:

Surface area = Base area + 3 x side triangles area

Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3

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