anonymous
  • anonymous
find the radius of a circle with an area of 38ft squared
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[A=\pi*r^2\]
anonymous
  • anonymous
i know that is the formula but i am not sure how to solve it
anonymous
  • anonymous
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.

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anonymous
  • anonymous
i got a weird number when i divided 38 by pie 12.09577567
anonymous
  • anonymous
That weird number is correct.
anonymous
  • anonymous
Now you just need to take the square root. :)
anonymous
  • anonymous
i got 3.477898168 is i right?
anonymous
  • anonymous
Yes. You can always check yourself by plugging your answer into the equation for r.
anonymous
  • anonymous
thank you very much i got what i needed
anonymous
  • anonymous
You're welcome. :)

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