Respuesta :

Using the formulas
A=πr2
C=2πr
Solving forC
C=2πA

Your answer: 21.27
jdhobbs13
Knowing that your area is:
A= (pi) r^2 = 36 in^2

You can find the radius as:
r= (sqrt) 36/pi = 3.4 in

With this you can evaluate the circumference as:
C = 2(pi)r = 2 x 3.14 x 3.4 = 21.3 in

Answer: 21.3 in

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