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eli123

  • 3 years ago

help please!

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  1. eli123
    • 3 years ago
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  2. eli123
    • 3 years ago
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    @hannah041 help please

  3. petewe
    • 3 years ago
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    what's the area of a square?

  4. eli123
    • 3 years ago
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    base times height

  5. petewe
    • 3 years ago
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    so if base is x, what's area?

  6. eli123
    • 3 years ago
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    x^2

  7. eli123
    • 3 years ago
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    @petewe

  8. petewe
    • 3 years ago
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    and the area of a circle is what?

  9. eli123
    • 3 years ago
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    pi times r^2

  10. petewe
    • 3 years ago
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    given circumference 12-4x, find r

  11. eli123
    • 3 years ago
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    3^2=9

  12. petewe
    • 3 years ago
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    where did that come from?

  13. eli123
    • 3 years ago
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    12-4x=0

  14. petewe
    • 3 years ago
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    let me just show you the whole solution

  15. petewe
    • 3 years ago
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    Area of sq = x^2 Area of circle = pi r^2 Circumference of circle = 2 pi r Therefore, 2 pi r = 12-4x r = (12-4x)/2pi area of circle = pi [(12-4x)/2pi]^2 Therefore, A(x) = x^2 + pi [(12-4x) / 2pi]^2

  16. petewe
    • 3 years ago
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    ask where you get lost

  17. eli123
    • 3 years ago
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    ok and what would the answer give you?

  18. petewe
    • 3 years ago
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    that is the answer

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