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10 December, 21:11

How do you find the area of a circle if the diameter is 9?

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Answers (2)
  1. 11 December, 00:14
    0
    =63.585

    Step-by-step explanation:

    A = π r²

    9/2=4.5

    4.5^2=20.25

    20.25x3.14=63.585
  2. 11 December, 00:42
    0
    A≈63.62

    Step-by-step explanation:

    A=πr2

    d=2r

    Solving forA

    A=1 / 4 x π x d^2

    =1 / 4 x π x 92 ≈ 63.61725
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