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AleksandrR [38]
3 years ago
11

HELP HELP HELP HELP HELP​

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

Length of base (a) = 5 units

Total Surface Area of Pyramid (T.S.A.) = ?

Now,

T.S.A. = Area of four triangles + Area of base

         = 4(\frac{\sqrt{3} }{4})(5^{2}) + 5^{2} = 25\sqrt{3}  + 25 ≈ 68.301sq. units

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