Answer:
To find the area of a circle we have and the radius is half of the diameter so we have 4.5² which gives 16.25π
Answer: A≈63.62
Explanation:
9/2= 4.5
A=πr2=π·4.52≈63.61725
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and the radius is half of the diameter so we have 4.5² which gives 16.25π