jayleneriv27
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  • 22-05-2020
  • Mathematics
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what is the exact surface area of the following square pyramid?

what is the exact surface area of the following square pyramid class=

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Аноним Аноним
  • 22-05-2020

Answer:

[tex]648\sqrt{2}[/tex]unit^2

Step-by-step explanation:

[tex]18^2+2\cdot 18\cdot \sqrt{\frac{18^2}{4}+9^2}\\=2\cdot \:18\sqrt{\frac{18^2}{4}+9^2}=324\sqrt{2}\\=18^2+324\sqrt{2}\\=324+324\sqrt{2}\\=648\sqrt{2}[/tex]

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