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anonymous

  • one year ago

PLZ HELP WILL MEDAL AND FAN What is the exact diameter of an area rug with a circumference of thirty-six feet? eighteen pi feet eighteen divided by pi feet thirty-six divided by pi feet thirty-six pi feet

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  1. marihelenh
    • one year ago
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    \[C=(\pi)d\]

  2. marihelenh
    • one year ago
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    It is also equal to \[C=(\pi)r ^{2}\] So, if you put 36 in for the circumference, you get \[36=(\pi)r ^{2}\]

  3. anonymous
    • one year ago
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    thank you

  4. marihelenh
    • one year ago
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    From there you can square root both sides and get your answer.

  5. marihelenh
    • one year ago
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    Oh my goodness wait.

  6. anonymous
    • one year ago
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    mari you're wrong C=pi*d is the circumference while pi*r^2 is the area

  7. marihelenh
    • one year ago
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    I did that incorrectly. I realized what I did @RicardoDelfin So, @joannacaro123 the other equation is \[C=(\pi)2r\]

  8. anonymous
    • one year ago
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    so I multiply

  9. marihelenh
    • one year ago
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    You could put back 36 in for C. From there you would divide and get what r is equal to.

  10. anonymous
    • one year ago
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    so my answer is \[\frac{ 36 }{ } \]

  11. anonymous
    • one year ago
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    |dw:1437411368979:dw|

  12. marihelenh
    • one year ago
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    |dw:1437411436136:dw|

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