A solid cone of height 12cm and radius 9cm is recast into a solid sphere. Calculate the surface area of the sphere​

Question

A solid cone of height 12cm and radius 9cm is recast into a solid sphere. Calculate the surface area of the sphere​

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Mộc Miên 3 years 2021-09-03T18:43:05+00:00 2 Answers 29 views 0

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  1. thugiang
    0
    2021-09-03T18:44:06+00:00
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    Answer:

    1017.8

    Step-by-step explanation:

    this is the formula 4πr2

    hope this helps: )

  2. Ben
    0
    2021-09-03T18:44:55+00:00
    Reply

    Answer:

    Step-by-step explanation:

    Volume of cone = π9²⋅12/3 = 324π cm³

    volume of sphere = 4πr³/3 = 324π

    r = ∛243

    surface area of sphere = 4πr² ≈ 155.8π

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