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Question Number 168388 by leicianocosta last updated on 09/Apr/22

Answered by Tibo last updated on 09/Apr/22

$$a)\pi r^2=\pi \times 9\approx 28.26{cm}^2$$$$b)2\pi rh=2\times \pi \times 3\times 8\approx 150.72{cm}^2$$$$c)2(28.26)+150.72=297.24{cm}^2$$$$d)\pi r^{2}h=\pi \times 9\times 8\approx 226.08{cm}^3$$$$$$

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