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OpenStudy (anonymous):
What is the exact area of the circle with a diameter of 9
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OpenStudy (ivettef365):
A = pi. r^2 d= 9 so r = 4.5
OpenStudy (anonymous):
area of a circle would be pi r^2 so 1/2 of 9 is 4.5 -- since radius is 1/2 the diameter so 4.5 squared times pi so the answer would be 20.25 pi
OpenStudy (anonymous):
Thanks
OpenStudy (anonymous):
np
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