The mean orbital radius of the Earth around the Sun is `1.5 xx 10^8 km`. Estimate the mass of the Sun.

Explanation

To estimate the mass of the Sun using the mean orbital radius of the Earth, we can follow these steps:

### Step 1: Convert the mean orbital radius to meters
The mean orbital radius of the Earth around the Sun is given as:
\[ R = 1.5 \times 10^8 \text{ km} \]

To convert kilometers to meters:
\[ R = 1.5 \times 10^8 \text{ km} \times 1000 \text{ m/km} = 1.5 \times 10^{11} \text{ m} \]
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