A. for the circumference it is C=pi(d)=pi(2r)=pi(10)= 31.4 ft b. for the area it is A=pi(r)^2=pi(5)^2=pi(25)= 78.5 ft squared c. since the are is 78.5 ft squared multiply by $4.50= $353.25 to floor the circle.
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