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OpenStudy (anonymous):
Suppose the diameter of a circle is 10. What is its area?
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OpenStudy (kendricklamar2014):
Area of a Circle:\[A = \pi r^2\]
OpenStudy (kendricklamar2014):
To find the Radius:\[Diameter = 10/2 = 5\]
OpenStudy (kendricklamar2014):
So now we plug in what we know:\[A=\pi5^2\]
OpenStudy (kendricklamar2014):
\[Area = 78.54\]
OpenStudy (anonymous):
it was 25 pi
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OpenStudy (kendricklamar2014):
\[5^2 = 25\]
OpenStudy (kendricklamar2014):
next time @flowers4547 post the answer choices as well
OpenStudy (anonymous):
there were no choice options if there was I would say them I'm not that stupid! and I'm worried about my state tests tomorrow.
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