What percentage of the earth's surface is covered by land ?

Options

A. `80%`
B. `25%`
C. `75%`
D. `21%`

Answer

To determine the percentage of the Earth's surface that is covered by land, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Earth's Surface**:
- The Earth's surface is made up of land and water.

2. **Know the Percentage of Water**:
- It is commonly known that approximately 71% of the Earth's surface is covered by water.

3. **Calculate the Percentage of Land**:
- Since the total surface area must equal 100%, we can find the land coverage by subtracting the percentage of water from 100%.
- Calculation:
\[ \text{Percentage of Land} = 100\% - \text{Percentage of Water} \]
\[ \text{Percentage of Land} = 100\% - 71\% = 29\% \]

4. **Conclusion**:
- Therefore, the percentage of the Earth's surface that is covered by land is **29%**.

### Final Answer:
The percentage of the Earth's surface covered by land is **29%**.

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