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eli123

help please!

  • one year ago
  • one year ago

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  1. eli123
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    • one year ago
  2. eli123
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    @hannah041 help please

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

    • one year ago
  4. eli123
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    base times height

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

    • one year ago
  6. eli123
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    x^2

    • one year ago
  7. eli123
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    @petewe

    • one year ago
  8. petewe
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    and the area of a circle is what?

    • one year ago
  9. eli123
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    pi times r^2

    • one year ago
  10. petewe
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    given circumference 12-4x, find r

    • one year ago
  11. eli123
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    3^2=9

    • one year ago
  12. petewe
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    where did that come from?

    • one year ago
  13. eli123
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    12-4x=0

    • one year ago
  14. petewe
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    let me just show you the whole solution

    • one year ago
  15. petewe
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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

    • one year ago
  16. petewe
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    ask where you get lost

    • one year ago
  17. eli123
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    ok and what would the answer give you?

    • one year ago
  18. petewe
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    that is the answer

    • one year ago
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