Answer:
-10.7
Step-by-step explanation:
The formula is L*W*D, right?
So for the cube, since all sides are equal then the Length, Width and Depth would all be 8 unless otherwise specified. 8*8*8=512
The rectangle would be 10*2*3&1/2 or 10*2*3.5=70
I hope this is correct but if you want check my work with a calculator to make sure.
A-8a+12-3a+6
The answer is 11a+18
( b = 15.0 / le ) is the answer