Kayliereinkingh Kayliereinkingh

04-05-2017
Mathematics

contestada

The exact area of a circle is 81 pi square inches what are the radius and diameter of the circle

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DariusX DariusX

04-05-2017

area is pi*r^2

so if area is 81pi, means r=9

diameter is 2*pi*r =2*pi*9=18pi

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HomeworkPotato123 HomeworkPotato123

04-05-2017

To get the radius multiply 254.34 by 2 which is 508.68 and to get the radius you divide 254.34 by 2 and you get 127.17

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