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1 August, 04:16

The great circle of a hemisphere has a circumference of 22π square meters. What is the radius of the hemisphere?

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Answers (2)
  1. 1 August, 04:20
    0
    Let's assume π is 3.14.

    22 * 3.14 ≈ 69.08

    Circumference = π*diameter

    69.08:3.14

    22 is the diameter.

    Diameter / 2 = radius

    Radius ≈ 11 square meters
  2. 1 August, 04:26
    0
    I think the great circle is the bottom circle thing where it got cut off

    so c=2pir

    so given

    c=22pi

    22pi=2pir

    divide both sides by pi

    22=2r

    divide both sides by 2

    11=r

    the radius is 11 meters
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