Question

Sirius is about 8.8 light years from Earth. If one light year equals 9.46 × 10^12 kilometers, how far is Sirius from Earth, measured in kilometers?A. 1.1 × 10^11 kilometersB. 8.3 × 10^11 kilometersC. 1.1 × 10^13 kilometersD. 8.3 × 10^13 kilometers

Answer 1

Given:

The distance between the earth and Sirius is 8.8 light-years.

Also,

`1\text{ light year = 9.46 }*10^(12)\text{ km}`

To find the distance between the earth and the Sirius in kilometres

Step-by-step explanation:

The distance between the earth and the Sirius is

`\begin{gathered} d=\text{ 8.8}*9.46*10^(-12)\text{ km} \\ =8.3*10^(13)\text{ km} \end{gathered}`

Thus, option D is correct.