To convert cubic centimeters (cm³) to cubic kilometers (km³), you can use the following conversion factors:
1 km = 1,000,000 cm (since 1 km = 1,000 m and 1 m = 100 cm)
To convert cubic centimeters to cubic kilometers, you would cube the conversion factor:
\[ 1 \text{ km}^3 = (1,000,000 \text{ cm})^3 = 1,000,000,000,000,000 \text{ cm}^3 \]
Therefore,
\[ 1 \text{ km}^3 = 10^{15} \text{ cm}^3 \]
Now, to convert 3 cm³ to km³:
\[ 3 \text{ cm}^3 = \frac{3}{10^{15}} \text{ km}^3 = 3 \times 10^{-15} \text{ km}^3 \]
So, 3 cm³ is equal to \(3 \times 10^{-15}\) km³.