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  • 22-04-2018
  • Mathematics
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Аноним Аноним
  • 22-04-2018
Area of the square base = 18 x 18 = 324 m²

Area of the 4 triangles = 4 ( 1/2 x 18 x 16)  = 576 m²

Total Surface area = 324 + 576 = 900 m²

Answer: The surface area is 900 m²
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