Verified Answer :

We know, Diameter = Circumference / π
d = 56.52 / 3.14
d = 18

In short, Your Answer would be 18 Feet

Hope this helps!

Equation for circumference of a circle is = 2pir 
56.52=2pir 
56.52/2pi=r 
r= 9 

Equation for area of a circle = pir^2 
A= pi * (9)^2 
A= 81pi or 254.34 hope it helps ;p

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