Question

va rog am nevoie urgenta ​

Answer 1

Explicație pas cu pas:

ΔABC ~ ΔADE

$\frac{AB}{AD} = \frac{AC}{AE} = \frac{BC}{DE} < = > \frac{60}{12} = \frac{AC}{10} = \frac{BC}{8}$

$AC = \frac{60 \times 10}{12} = 50 \: cm$

$BC = \frac{60 \times 8}{12} = 40 \: cm$

Perimetrul ΔABC = AB + BC + AC = 60 + 40 + 50 = 150 cm