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anonymous

  • 5 years ago

Find the diameter of a circle that has an area of 36pi square inches

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  1. anonymous
    • 5 years ago
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    if area equals pi r squared and you know that the area equals 36 pi

  2. anonymous
    • 5 years ago
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    then set 36pi = pi r squared divide pi to the left side

  3. anonymous
    • 5 years ago
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    you are now left with 36=r squared

  4. anonymous
    • 5 years ago
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    square root both sides and you now have r=6

  5. anonymous
    • 5 years ago
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    r is radius and what is diameter

  6. anonymous
    • 5 years ago
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    hint: diameter is 2 times r

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