Answer:
That would be -5
Step-by-step explanation:
Volume of each cube=

So,edge of each cube =
![\sqrt[3]{64} = 4](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B64%7D%20%3D%204)
If we join two cubes, then length of cuboid so formed = (4 + 4) = 8.0 cm
Breadth of cube = 4.0 cm
and Height of cube = 4.0 cm
Therefore, surface area of resulting cuboid
= 2 × [lb + bh + hl]
= 2 × [8 × 4 + 4 × 4 + 4 × 8]
= 160 cm²
The answer i got was 49-9b^2
2 hours to five days or 2 hours to 120 hours. message me if you need anymore help i will be willing to help ya out