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Define astronomical unit (A.U), write it...

Define astronomical unit (A.U), write its value in metres.

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### Step-by-Step Solution: 1. **Definition of Astronomical Unit (A.U)**: - The Astronomical Unit (A.U) is defined as the average distance between the Earth and the Sun. It is a standard unit of measurement used in astronomy to describe distances within our solar system. 2. **Value of Astronomical Unit in Meters**: - The value of 1 Astronomical Unit (A.U) is approximately 1.49 × 10^11 meters. ...
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