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OpenStudy (anonymous):
What is the area of a circle with a radius of 3?
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OpenStudy (anonymous):
3pi 6pi 9pi 12pi 15pi
OpenStudy (anonymous):
\[A=\pi r^2\]
OpenStudy (anonymous):
but it's not one of the choices?
OpenStudy (anonymous):
well, thats cause you multiplied pi just solve for r^2 and leave it in front of pi without multiplying the 2 together
OpenStudy (anonymous):
3^2= 9
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OpenStudy (anonymous):
oh i get it, thanks :D
OpenStudy (anonymous):
yup
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