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heather040200

  • 2 years ago

Help! I give medals:) Pic below find the height and surface area of the right circular cylinder with the height equal to the diameter. Show work

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  1. heather040200
    • 2 years ago
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    Height=2r Volume-128pic

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  2. nickersia
    • 2 years ago
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    Surface area of a circle is \[r ^{2} \pi \] Volume is surface area of a circle multiplied by height. So, 128 = 2r * r (squared)*P

  3. heather040200
    • 2 years ago
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    how do I solve for r?

  4. nickersia
    • 2 years ago
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    \[r ^{2}\pi * 2r = 182\] \[r ^{3}\pi=64 \] \[r = \sqrt[3]{20.37}\] r=2.73

  5. heather040200
    • 2 years ago
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    OOh ok LOL Thank You so much :)

  6. nickersia
    • 2 years ago
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    Numbers are weird, but that's the only way I see how it's done :)

  7. heather040200
    • 2 years ago
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    as long as the answer n work r right that's all that matter in math LOL

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