The function represents the area of a circle(A) is given by :-
[tex]A(r)=2\pi r[/tex]
To determine the area of a circle whose radius is 11 inches. , we put the value of r=11 inches, we get
[tex]A(11)=2\pi (11)[/tex]
Now, we put [tex]\pi=\dfrac{22}{7}[/tex] in the above function , we get
[tex]A(11)=2(\dfrac{22}{7} )(11)\\\\\Rightarrow\ A=56.5714285714\approx56.57[/tex]
