I deleted the last stupid answer. It took until 5/28/02, when they removed the last column during a ceremony.
If you are asking how long did the twin towers stand. They stood from 1974 to 2001 and it has been 10 years to rebuild them today.
3 to 4 hours
48 years
It took 12 years.
Most of it was dust rather than smoke, but it hung around for Days.
Yes, planes did hit the twin towers on 9/11. American Airlines Flight 11 hit the North tower, and United flight 175 collided with the South Tower.
about 2 minuts
1hr 13min 1st tower
The list is long so; they're on the link below.
I don't really. Know but I was told it was 6 to 12 hours
To fold a dollar bill to look like the twin towers, start by folding the top corners down to create a peak. Fold the bottom edge up to make the base of the towers. Then fold the bill in half to create the twin towers effect.
0!! becuase some terrorists drove a plane into it, aparently they sneezed (achoo!)