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lng3313

  • 4 years ago

surface area of a cone? 12cm high and radius is 5 answer options are 90 pi 65pi 120pi 115pi

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  1. motex
    • 4 years ago
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    90 pi

  2. amistre64
    • 4 years ago
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    or.... pi(r) sqrt(r^2 + h^2)

  3. amistre64
    • 4 years ago
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    5pi sqrt(169) 5*13pi = 65pi

  4. amistre64
    • 4 years ago
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    its either that or 90; i cant recall if surface area includes the base area or not

  5. a_kaffash
    • 4 years ago
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    90!

  6. lng3313
    • 4 years ago
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    [Base Area] + 1/2 × Perimeter × [Slant Length]

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