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OpenStudy (anonymous):
a circle has a radius of 12. find the diameter and area. a. r=24 a= 9pie b. r= 24 a=36pie c. r= 6 a=36pie
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OpenStudy (agent47):
diameter = 2r radius=pi*r^2
OpenStudy (agent47):
it's none of the options
OpenStudy (agent47):
diameter is 24 area is 144pi
OpenStudy (anonymous):
Sorry, the r's should be d's.
OpenStudy (anonymous):
radius of 12 so, diameter= 2*radius=2*12=24
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OpenStudy (anonymous):
area= pi*radius^2= pi*12^2= 144pi
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