Since the triangles △ABC and △XBY are similar (△ABC∼△XBY), the corresponding sides are proportional.
This gives us the ratio of the sides:
\[ \frac{AB}{XY} = \frac{AC}{BX} \]
We are given:
- \( AB = 16 \) cm
- \( AC = 8 \) cm
- \( XY = 6 \) cm
We need to find \( BX \). Using the ratio:
\[ \frac{16}{6} = \frac{8}{BX} \]
Cross-multiplying to solve for \( BX \):
\[ 16 \cdot BX = 8 \cdot 6 \]
Calculating the right side:
\[ 16 \cdot BX = 48 \]
Now, dividing both sides by 16:
\[ BX = \frac{48}{16} = 3 \]
Thus, the length of \( BX \) is \( 3 \) cm.
So, BX = 3 cm.