Question

Ayúdenme doy corazón

Answer 1

Respuesta:

Exactamente 14.95m², o sea la a)

Explicación paso a paso:

$s = \frac{a + b + c}{2} \\ = \frac{6.3m + 5m + 6.7m}{2} \\ = \frac{18m}{2} \\ = 9m \\ \\ area = \sqrt{s(s - a)(s - b)(s - c)} \\ = \sqrt{9m(9m - 6.3m)(9m - 5m)(9m - 6.7m)} \\ = \sqrt{9m \times 2.7m \times 4m \times 2.3m} \\ = \sqrt{223.56 {m}^{4} } \\ = 14.95 {m}^{2}$