Questão 2201342

\(\frac{1}{3}\left(5\pi\ \alpha\right)^2.\)

\(\frac{1}{3}\pi\alpha^210\pi.\)

\(\frac{5}{3}\pi\alpha\sqrt{10\pi-5\alpha.}\)

\(\frac{5}{3}\pi\alpha\sqrt{100\pi^2-25\alpha^2.}\)

\(\frac{25}{3}\pi\alpha^2\sqrt{100\pi^2-25\alpha^2.}\)