Respuesta :

andreilovescars

Answer:

around 254.47

Step-by-step explanation:

pi*r^2 is the equation. the radius is 9 so in the equation the r^2 is equal to 81 since 9*9 =81. 81*pi is equal to 254.47

AnastasiaTJ

Answer:

Area is around 254.47

Step-by-step explanation:

Using diameter you use the formula: [tex]1/4\pi (d)^2[/tex]

insert 18 in place of the d

[tex]1/4\pi (18)^2\\[/tex]

Insert 1/4*[tex]\pi[/tex]

Multiply by 18^2 or Multiply it by 18 twice