Ответ:
10,125рв см².
Объяснение:
[tex]s = \frac{\pi \times {9}^{2} }{360} \times 45 = \frac{81\pi}{8} = 10.125\pi[/tex]
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Ответ:
10,125рв см².
Объяснение:
[tex]s = \frac{\pi \times {9}^{2} }{360} \times 45 = \frac{81\pi}{8} = 10.125\pi[/tex]