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22-04-2014
Mathematics

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Find the area of the given circle. Round to the nearest tenth.
11.0 ft^2
38.5 ft^2
42.8 ft^2
113.0 ft^2

Find the area of the given circle Round to the nearest tenth110 ft2385 ft2428 ft21130 ft2 class=

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Аноним Аноним

22-04-2014

[tex]diameter=12\ ft\\\\diameter=2\ radius\\\\2r=12\ ft.\ \ \ /:2\\r=6\ ft.\\\\A=\pi r^2\\\\A=\pi\cdot6^2=36\pi\ (ft^2)\approx36\cdot3.14=113.04\ (ft^2)\approx113.0\ (ft^2)[/tex]

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