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5 January, 22:46

Find the length of the diameter of a sphere with a surface area of 24.63 miles2.

1.4 miles

2.8 miles

2.5 miles

1.25 miles

A sphere has cross sections that are circles.

True

False

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Answers (1)
  1. 5 January, 23:46
    0
    2.8 miles.

    True.

    Step-by-step explanation:

    Surface area = 4π r^2 (where r = the radius of the sphere)

    24.63 = 4 π r^2

    r^2 = 24.63 / 4π

    r = √ (24.63 / 4π)

    = 1.4 miles.

    So the diameter = 2*1.4 = 2.8 miles (answer).

    The answer to the second part of the question is true.
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