The planet neptune travels around the sun with a period of 165 yr. What is the radius of the orbit approximately, if the orbitt is considered as circular ?

Explanation

To find the radius of Neptune's orbit around the Sun, we can use Kepler's Third Law of planetary motion, which states that the square of the period of revolution of a planet is directly proportional to the cube of the semi-major axis (radius) of its orbit.

### Step-by-Step Solution:

1. **Identify the Given Data:**
- Period of Neptune (T₂) = 165 years
- Period of Earth (T₁) = 1 year (since we will use Earth as a reference)

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