What is the difference in height between a point 270 m above sea level and 80 m below sea level ?

Answer

To find the difference in height between a point that is 270 m above sea level and another point that is 80 m below sea level, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the heights**:
- The height above sea level is +270 m.
- The height below sea level is -80 m.

2. **Understand the concept of height difference**:
- The height difference can be calculated by adding the absolute values of both heights. This is because one height is above sea level (positive) and the other is below sea level (negative).

3. **Calculate the total height difference**:
- To find the total height difference, we add the height above sea level and the absolute value of the height below sea level.
- This can be represented mathematically as:
\[ \text{Height Difference} = 270 + 80 \]

4. **Perform the addition**:
- Now, we add the two values:
\[ 270 + 80 = 350 \]

5. **Conclusion**:
- The difference in height between the two points is 350 m.

### Final Answer:
The difference in height between a point 270 m above sea level and 80 m below sea level is **350 m**.

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