The volume of a cube is just the side length cubed...
V=s^3 in this case:
V=39^3=59319 ft^3
and in cubic yards it is:
59319 ft^3*(yd^3/27 ft^3)=2197 yd^3
The answer is 3.6 or 3 6/10 or 3 3/5 all equivalent
The factory normally produces 800 reels a day.
They have to cut their production by 1/5, however.
800 * 4/5 = 640 reels a day.
30 days would mean 640 * 30 reels...19200 reels.
This is less than 20,000, so the factory will NOT be able to produce enough reels.
Answer:
The surface area would be 471.