[tex] \sf Resposta: \: \red{\boxed{\frac{247\pi}{2}}}[/tex]
[tex] \frac{\pi (25 \times 10 - 3) 2}{4} \\ [/tex]
[tex] \frac{\pi \times (250 - 3) \times 2}{4} \\ [/tex]
[tex] \frac{\pi \times (250 - 3)}{2} \\ [/tex]
[tex] \frac{\pi \times 247}{2} \\ [/tex]
[tex] \red{\boxed{\frac{247 \: \pi}{2}}} [/tex]
Outra forma:
[tex] \sf \frac{\pi(25 \times 10 - 3) {}^{2} }{4} \\ [/tex]
[tex] \frac{\pi \times (250 - 3) {}^{2} }{4} \\ [/tex]
[tex] \frac{\pi \times 247 {}^{2} }{4} \\ [/tex]
[tex] \frac{\pi \times 61009}{4} \\ [/tex]
[tex] \red{ \boxed{\sf \frac{61009\pi}{4}}}[/tex]
