Question

2 - Calcule a área de um triângulo com base de 19 cm e altura de 8 cm.​

Answer 1

$Altura\ \to\ h=8\ cm\\ Base\ \to\ b=19\ cm\\\\ \acute{A}rea=\dfrac{Base\times Altura}{2}\ \therefore\ A=\dfrac{bh}{2}=\dfrac{19\times8}{2}=19\times4\\\\ \boxed{A=76\ cm^2}$