5.

what is the approximate capacity of the cube in liters?

a.
0.0551 l

b.
0.551 l

c.
5.51 l

d.
55.1 l

the lenth width and heighth are all 82cm

 1C. 5^3 = 125 mL 
2A. 30^3 = 27,000 mL = 27 L 
3D. 75 mm is 7.5 cm, so we do: 7.5^3 = 421.875 mL = 0.421875 L =~ 0.422 L 

Note: 
1 mL = 1 cm^3 
1 L = 1,000 mL 
10 mm = 1 cm

Step 1: 6x-10=1; step 2: 6x=11