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5 January, 17:18

A circle has a radius of r inches. The area of a circle is given by A=πr2. Identify the equation (s) that represent the radius of the circle.

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Answers (2)
  1. 5 January, 17:48
    0
    r = √[A / π]

    Step-by-step explanation:

    Actually, it's A = π · r² or A = πr^2.

    Solving this for r, we get: r^2 = A / π, and so r = √[A / π]
  2. 5 January, 20:14
    0
    r=pi/a^2
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