Question

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Answer 1

Explicación paso a paso:

$al = \pi \times r \times g \\ al = 10cm\pi \times 18cm \\ al = 180\pi {cm}^{2}$

$at = 180\pi {cm}^{2} + {(10cm)}^{2} \pi \\ at = 180\pi {cm}^{2} + 100 {cm}^{2} \pi \\ at = 280\pi {cm}^{2}$