Question

Calcule a área do triângulo a seguir:

Answer 1

Explicação passo-a-passo:

$\sf S=\dfrac{b\cdot c\cdot sen~\hat{A}}{2}$

$\sf S=\dfrac{8\cdot12\cdot sen~60^{\circ}}{2}$

$\sf S=\dfrac{8\cdot12\cdot\frac{\sqrt{3}}{2}}{2}$

$\sf S=\dfrac{\frac{96\sqrt{3}}{2}}{2}$

$\sf S=\dfrac{48\sqrt{3}}{2}$

$\sf \red{S=24\sqrt{3}~cm^2}$