Question

gente me ajuda nessa pergunta 12 por favor

Answer 1

$x+y+z=180$

Pelo Teorema de Tales:

$\dfrac{x}{40}=\dfrac{y}{30}=\dfrac{z}{20}$

$r=\dfrac{x+y+z}{40+30+20}=\dfrac{180}{90}=2$

$x=40r=40\cdot2=80~\text{m}$

$y=30r=30\cdot2=60~\text{m}$

$z=20r=20\cdot2=40~\text{m}$.