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OpenStudy (anonymous):
A circle has a radius of 5 cm. What is the approximate area of the circle? A. 19.6 cm2 B. 157.0 cm2 C. 78.5 cm2 D. 39.3 cm2
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OpenStudy (anonymous):
\[A=\pi r^2\]
OpenStudy (anonymous):
Plug it all in and you get 78.5cm^2 or C
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