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anonymous

  • 5 years ago

find the radius of a circle with an area of 38ft squared

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  1. anonymous
    • 5 years ago
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    \[A=\pi*r^2\]

  2. anonymous
    • 5 years ago
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    i know that is the formula but i am not sure how to solve it

  3. anonymous
    • 5 years ago
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    Ok so after plugging in values you get. \[38=\pi*r^2\] so then divide by \[\pi\] and take the square root of that number to get r.

  4. anonymous
    • 5 years ago
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    i got a weird number when i divided 38 by pie 12.09577567

  5. anonymous
    • 5 years ago
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    That weird number is correct.

  6. anonymous
    • 5 years ago
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    Now you just need to take the square root. :)

  7. anonymous
    • 5 years ago
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    i got 3.477898168 is i right?

  8. anonymous
    • 5 years ago
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    Yes. You can always check yourself by plugging your answer into the equation for r.

  9. anonymous
    • 5 years ago
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    thank you very much i got what i needed

  10. anonymous
    • 5 years ago
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    You're welcome. :)

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