If the area of a circle is 81π, then what is the diameter of the circle?​

Question

If the area of a circle is 81π, then what is the diameter of the circle?​

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Đan Thu 5 months 2021-08-25T11:30:21+00:00 1 Answers 0 views 0

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    2021-08-25T11:32:10+00:00

    Answer:

    18

    Step-by-step explanation:

    81π=πr^2

    r= 9,-9

    9+9=18

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