Question

a) 10 cm
b) 12 cm
c) 16 cm
d)20 cm
e) 32 cm

Answer 1

$\frac{(2x + 12)}{2} \times x = 160$

$\frac{(2x + 12) \times x}{2} = 160$

$\frac{2{x}^{2} + 12x }{2} = 160$

${x}^{2} + 6x = 160$

${x}^{2} + 6x - 160 = 0$

Pela fórmula resolvente,
$x = 10$

Base maior = 20 cm

Resposta d)