What is the combined surface area of Uranus and Neptune?
Uranus: 8.1 x 109 km2
Neptune: 7,700,000,000 km2

To calculate the combined surface area of Uranus and Neptune, we simply add their surface areas together.

The surface area of Uranus is \( 8.1 \times 10^9 \, \text{km}^2 \).

The surface area of Neptune is \( 7.7 \times 10^9 \, \text{km}^2 \).

Now, let's add them:

\[
8.1 \times 10^9 + 7.7 \times 10^9 = 15.8 \times 10^9 \, \text{km}^2
\]

Thus, the combined surface area of Uranus and Neptune is \( 15.8 \times 10^9 \, \text{km}^2 \), or 15.8 billion square kilometers.

Would you like further details or explanations?

Here are 5 related questions for you to consider:
1. How do the sizes of Uranus and Neptune compare to Earth?
2. What is the formula to calculate the surface area of a planet?
3. How do the atmospheres of Uranus and Neptune affect their surface area measurements?
4. How does the volume of these planets compare to their surface area?
5. What is the significance of the ice giants' surface area in understanding their weather systems?

**Tip:** When comparing planetary surface areas, always consider whether the value includes cloud cover or represents the actual solid surface, as this can vary based on measurement methods.

What is the combined surface area of Uranus and Neptune?

Discover how to calculate the combined surface area of Uranus and Neptune by adding their surface areas in scientific notation. This problem focuses on basic addition, surface area calculations, and scientific notation, suitable for students in Grades 5-7.

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