Answer:
length: 2cm width: 3cm height: 3cm
Explanation:
The volume has to equal 18 since we have 18 cubes measuring 1 cm
length: 2cm width: 2cm height: 3cm 2*2*3 = 12 not possible answer
length: 2cm width: 3cm height: 3cm 2*3*3 =18 answer
length: 3cm width: 3cm height: 3cm 3*3*3 27 not possible answer
length: 6cm width: 6cm height: 6cm 6*6*6 = 216 not possible answer