Answer:
[tex]12\pi n[/tex]
Step-by-step explanation:
[tex]\pi(n+3)^2-\pi(n-3)^2[/tex] {Area formula of [tex]Circle:A=\pi r^{2}[/tex]}
[tex]=\pi(n+3)^{2}-\pi (n^{2}-6n+p)[/tex]
[tex]=\pi (n^{2}+6n+p-n^{2}+6n-9)[/tex]
[tex]=12\pi n[/tex]
I hope this helps you
:)
