Your solution is correct. To have the answer in pi term, that means that you have to say just 81pi.

Don't use your calculater to evaluate.

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- May 10th 2007, 06:48 PM #1

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- Mar 2007
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## Is this right?

I would like if I have done this correct and I also need help with one thing in this problem.

What is the area of a circle w/circumference 18pi centimeters? Give your answer in terms of pi.

My answer so far is: C= 2pi r --> 18pi = 2pi r --> 18pi/2pi = 2pi r/2pi --> 9= r

A= pi r^2 --> A= pi (9)^2 --> A= 81pi --> A= 254.4690049 centimeters

Now what I'm confused in is how do I write my answer in pi terms? I have look in my book and I have no luck.

Thank you for the help.

- May 10th 2007, 07:16 PM #2

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- Dec 2006
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- May 11th 2007, 06:18 AM #3