Respuesta :

hanrzn

Answer:

8cm

Step-by-step explanation:

1/2 × 18b = 72

9b = 72

b = 72/9

b = 8

Answer:

Answer:

8 cm

Step-by-step explanation:

1/2 × 18 b = 72

9 b = 72

b = 72/9

b = 8