Still need help if so answer is three i just took the same ia test
Formula of circle:
C= 2πr
The radius is half of the diameter, so divide 9 by 2
18/2=9
Then plug in 9 as the radius in the formula.
C= 2π(9)
Using you calculator multiply 2 by the symbol "π" and 9
Exact Form is 18π
Decimal Form is 56.54866776...
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hope this helps and please mark me as brainliest. please
I will choose. C,tell me if it is correct or. not
