Length = 3cm
1/2 cm cube = 3 ÷ 1/2 = 3 x 2 = 6
Width = 4cm
1/2 cm cube = 4 ÷ 1/2 = 4 x 2 = 8
Height = 5cm
1/2 cm cube = 5 ÷ 1/2 = 5 x 2 = 10
Number o 1/2 cubes = 6 x 8 x 10 = 480
The formula of an area of parallelogram:

We have
and 
Substitute:
<em>divide both sides by 6.3</em>

Answer: 
Answer:
I believe the answer would be D.