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OpenStudy (anonymous):
multiple choice. help please?(:
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OpenStudy (anonymous):
OpenStudy (zehanz):
The fence will be a circle with radius 15 ft. The circumference of a circle is \(2\pi r\), where r is the radius...
OpenStudy (anonymous):
so 94
OpenStudy (anonymous):
shouldn't it be pi r^2
OpenStudy (zehanz):
Oops, I see, the question asks not how much fencing you need (=circumference), but the enclosed area. Thet is \(\pi r^2\)!
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