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ChinaGurl Group Title

The diameter of a circle is 3.5 inches. What is the circumference of the circle? .....38.5?

  • 2 years ago
  • 2 years ago

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  1. comekimchi Group Title
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    pir^2

    • 2 years ago
  2. tiaph Group Title
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    Circumference is given by 2(pi) (radius) = (pi)(diameter)= pi * 3.5= 11 inches. pi r^2 is for area of a circle.

    • 2 years ago
  3. JonPelc Group Title
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    2*pi*r will get you the answer. 2r is the diameter so you already have that part. Just multiply by pi.

    • 2 years ago
  4. ChinaGurl Group Title
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    I solved it....turned out to be 11in

    • 2 years ago
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