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The circumference of a circle is 11/pi. What is the area, in square inches, of the circle? Express your answer in terms of /pi.
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Sep 10, 2017
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The circumference of a circle is 11/pi. What is the area, in square inches, of the circle? Express your answer in terms of /pi.
Mathematics
middle-school
Luksak
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so since 11/pi doesn't means 11 divided by pi but it means 11 pi
circumference=2pir
if circumerence=11pi
2pir=11pi
solve for r (radius)
divide both sides by pi
2r=11
divide by 2
r=5.5
area=pir^2
area=pi5.5^2
area=pi30.25
answer is area=30.25pi in^2
Greg Shackles
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Sep 17, 2017
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Greg Shackles
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