Mathematics: Area = 19.6 mi ^2 radius of each circle round to nearest tenth

Area = 19.6 mi ^2 radius of each circle round

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MariaIZweird7578

20.07.2019

The formula of the area of the circle: $a=\pi r^2$ $a=19.6\ mi^2; \ \pi\approx3.14\\\\substitute\\\\19.6=3.14r^2\ \ \ |: 3.14\\\\r^2=\dfrac{19.6}{3.14}\\\\r^2=\dfrac{1960}{314}\\\\r=\sqrt{\dfrac{1960}{314}}\\\\r\approx2.5\ mi$ answer: r ≈ 2.5 mi.

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nonjabulomabaso7423

23.09.2021

Mathematics

0.7 is the rate change between the two points

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Area = 19.6 mi ^2 radius of each circle round to nearest tenth

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