Respuesta :

Mekhala

Answer:

A = [tex]\pi[/tex] . r^2

If A = 9[tex]\pi[/tex]ft^2

[tex]\pi[/tex] . r^2 = 9[tex]\pi[/tex]ft^2

r^2 = 9ft^2

r = sqrt(9ft^2)

r = 3ft ( r>0)

Step-by-step explanation:

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