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Select the correct answer.

Venus is an average distance of 108.2 million kilometers from the Sun. Use the conversion factor [tex]1 \, \text{AU} = 1.5 \times 10^8 \, \text{km}[/tex] to convert this distance from kilometers to astronomical units. Choose the closest answer.

A. [tex]0.72 \, \text{AU}[/tex]
B. [tex]1.25 \, \text{AU}[/tex]
C. [tex]3.56 \, \text{AU}[/tex]
D. [tex]45.63 \, \text{AU}[/tex]
E. [tex]96.12 \, \text{AU}[/tex]


Sagot :

To find the distance of Venus in astronomical units (AU) given its distance in kilometers, we will use the provided conversion factor. Here’s the step-by-step process:

### Step 1: Understand the problem
- Distance of Venus from the Sun: 108.2 million kilometers
- Conversion factor: [tex]\(1 \, \text{AU} = 1.5 \times 10^8 \, \text{km}\)[/tex]

### Step 2: Convert the distance from kilometers to AU
To convert the distance of Venus from kilometers to AU, we divide the distance in kilometers by the conversion factor.

[tex]\[ \text{Distance in AU} = \frac{\text{Distance in km}}{\text{Conversion factor (km per AU)}} \][/tex]

Given:
[tex]\[ \text{Distance in kilometers} = 108.2 \times 10^6 \, \text{km} \][/tex]
[tex]\[ \text{Conversion factor} = 1.5 \times 10^8 \, \text{km/AU} \][/tex]

Hence, the distance in AU is calculated as:

[tex]\[ \text{Distance in AU} = \frac{108.2 \times 10^6 \, \text{km}}{1.5 \times 10^8 \, \text{km/AU}} \][/tex]

### Step 3: Perform the division
[tex]\[ \text{Distance in AU} = \frac{108.2 \times 10^6}{1.5 \times 10^8} \][/tex]

### Step 4: Simplify the calculation
Simplify the given numbers:

[tex]\[ \text{Distance in AU} = \frac{108.2}{150} \][/tex]

Divide 108.2 by 150:

[tex]\[ \text{Distance in AU} \approx 0.7213333333 \][/tex]

### Step 5: Find the closest option to the calculated distance
From the given choices:
- A. [tex]\(0.72 \, \text{AU}\)[/tex]
- B. [tex]\(1.25 \, \text{AU}\)[/tex]
- C. [tex]\(3.56 \, \text{AU}\)[/tex]
- D. [tex]\(45.63 \, \text{AU}\)[/tex]
- E. [tex]\(96.12 \, \text{AU}\)[/tex]

The closest value to [tex]\(0.7213333333 \, \text{AU}\)[/tex] among the options is [tex]\(0.72 \, \text{AU}\)[/tex].

### Step 6: Conclusion
Thus, the correct answer is:

[tex]\[ \boxed{0.72 \, \text{AU}} \][/tex]