The formula to calculate the Bale Wrap (BW) is:
\[ BW = \pi \times BD \times 6 \]
Where:
Let's say the bale diameter (BD) is 4 feet. Using the formula:
\[ BW = \pi \times 4 \times 6 = 75.40 \]
So, the Bale Wrap (BW) needed is 75.40 feet.