Answer:
507
Step-by-step explanation:
As they said, I will be using 3 as pi.
[tex]3[/tex] (pi) [tex]* (\frac{26}{2})^2[/tex] (radius squared)
Without annotations: [tex]3*\frac{26}{2}^2[/tex]
[tex]3*\frac{26}{2}^2[/tex]
[tex]3*13^2[/tex]; [tex]13*13=169[/tex]
[tex]3*169[/tex]
[tex]507[/tex]
