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21 August, 20:56

The volume of a sphere is 2254 pi m^3 what is the surface area of the sphere to the nearest 10th

a. 831.4 m^2

b. 891.6 m^2

c. 1220.0 m^2

d. 1783.3 m^2

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Answers (1)
  1. 21 August, 21:03
    0
    By definition. The volume of the sphere is:

    V = (4/3) * (pi) * (r ^ 3)

    Where,

    r: radius of the sphere.

    Substituting values:

    2254 pi = (4/3) * (pi) * (r ^ 3)

    Clearing the radio we have:

    r ^ 3 = (3/4) * (2254)

    r = ((3/4) * (2254)) ^ (1/3)

    r = 11.91255883

    Then, the surface area is:

    A = 2 * pi * r ^ 2

    Substituting values:

    A = 2 * 3.14 * (11.91255883) ^ 2

    A = 891.6 m ^ 2

    Answer:

    The surface area of the sphere is:

    b. 891.6 m ^ 2
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