Questão 1841735

\(\quad A = \sqrt{3} \, \frac{a}{2}\)

\(\quad A = \frac{\pi}{4} \, a^{2}\)

\(\quad A = \frac{a^{2}}{4} \sqrt{3}\)

\(\quad A = \frac{3}{2} \, a^{2} \sqrt{3}\)