roshamberta roshamberta

10-03-2016
Mathematics

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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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apologiabiology apologiabiology

10-03-2016

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

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