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anonymous

  • one year ago

The surface area of the figure below is 37.70 m2.

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  1. anonymous
    • one year ago
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    do you now the formula

  2. anonymous
    • one year ago
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    A=πr(r+h2+r2)

  3. anonymous
    • one year ago
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    plug that in to your cone and see what you get is true with the statement

  4. anonymous
    • one year ago
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    whats the height tho?

  5. anonymous
    • one year ago
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    @johnweldon1993

  6. johnweldon1993
    • one year ago
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    Wow that is a nasty looking formula up there What I would use is \[\large SA = \pi r l + \pi r^2\] l = the slant height = 6 here r = radius of the base = 2 here

  7. johnweldon1993
    • one year ago
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    I mean you CAN use your formula up there I guess...but you would need to calculate the height of the cone, which isnt that bad...just a simple application of pythagorea's |dw:1433202454161:dw|

  8. anonymous
    • one year ago
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    50.27

  9. johnweldon1993
    • one year ago
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    That's what I get too :)

  10. anonymous
    • one year ago
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    thankss !

  11. johnweldon1993
    • one year ago
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    Of course!

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