To find out how long the piece of wood you are going to cut is, you subtract the final length from the original length.
You have:
- Original length: 114 inches
- Final length: 12 inches
So:
\[ \text{Length to cut} = \text{Original length} - \text{Final length} \]
\[ \text{Length to cut} = 114 , \text{inches} - 12 , \text{inches} = 102 , \text{inches} \]
You need to cut 102 inches from the board.