Question

na figura, r//s//t. Qual é o valor de xy? URGENTE

Answer 1

$\frac{12}{x} = \frac{6}{8} \\ 6x = 96 \\ x = \frac{96}{6} \\ x =16$
$\frac{16}{y} = \frac{8}{10} \\ 8y = 160 \\ y = \frac{160}{8} \\ y = 20$