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OpenStudy (anonymous):
the circumference of a circle is 8pi ft. what is the area
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OpenStudy (nirmalnema):
2 pi r = 8pi r= 4 pi r ^2 =16pi sq feet
OpenStudy (nirmalnema):
circumference = 2pi r wich is = 8 pi as given pi is cancelled out from both side. 8 is divided by 2 = 4 which is equal to r |dw:1387200481298:dw|
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