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7 March, 20:06

What is the surface area of sphere with diameter 23 ft?

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Answers (2)
  1. 7 March, 20:23
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    It is: 4*pi*11.5squared = 529*pi square feet
  2. 7 March, 20:29
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    A = 4 π r^2

    A = 4 π (11.5^2)

    A = 4 π (132.25)

    And now, how you phrase the answer is up to you and your teacher but I will list three of them:

    A = 529 π

    Pi as 3.14:

    A = 1,661.06

    Pi in its true form but rounded to the nearest hundredth:

    A = 1,661.903
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