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26 June, 00:49

What is the area of a circle with a radius of 9 cm? (Express your answer using π.)

A.

81π cm2

B.

18π cm2

C.

324π cm2

D.

9π cm2

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Answers (2)
  1. 26 June, 03:40
    0
    Area of a circle = π * r^2

    π*9^2

    π*81 = 81 π

    Your answer is A.
  2. 26 June, 04:38
    0
    It is A because the area of a circle id π r^2 an 9*9=81 81
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