1. The problem involves finding the missing length in a chain of measurements where lengths are connected by addition or subtraction. 2. From the first example, we see the relationship: Top node + Box = Bottom node. 3. Given the first example: $150\text{cm} + 3\text{m }50\text{cm} = 2\text{m}$. 4. Convert all measurements to centimeters for easier calculation: - $150\text{cm} = 150\text{cm}$ - $3\text{m }50\text{cm} = 350\text{cm}$ - $2\text{m} = 200\text{cm}$ 5. Check the relationship: $150 + 350 = 500$, but bottom node is $200$, so the operation is likely subtraction: $150 + 350 - x = 200$ or $150 + 350 = 200 + x$. 6. Actually, the box represents the difference between the two nodes: $\text{Top node} + \text{Box} = \text{Bottom node}$ or $\text{Bottom node} - \text{Box} = \text{Top node}$. 7. For the exercise, given top node $6\text{m }35\text{cm} = 635\text{cm}$ and box $8\text{m }60\text{cm} = 860\text{cm}$, find bottom node: $$\text{Bottom node} = \text{Top node} + \text{Box} = 635 + 860 = 1495\text{cm}$$ 8. Convert $1495\text{cm}$ back to meters and centimeters: $$1495\text{cm} = 14\text{m }95\text{cm}$$ 9. Therefore, the missing bottom node is $14\text{m }95\text{cm}$. Final answer: $14\text{m }95\text{cm}$