Respuesta :

123nonameblablbla

Answer:

x=8

Step-by-step explanation:

1st rectangle:

6×4=24

2nd rectangle:

24÷3=8

Answer:

x = 8 cm

Step-by-step explanation:

A = l x L

6cm×4cm = 3cm×xcm

x = 24cm²/3cm

x = 8 cm