Answer:
Mercury 0.011020m
Venus 0.027336m
Earth 0.028810m
Mars 0.015344m
Jupiter 0.315790m
Saturn 0.272232m
Uranus 0.115449m
Neptune 0.111861m
Step-by-step explanation:
we have that 1.391 million km is equal to 1m then using scientific notation.
then

The circumference of Mercury is
we can do the conversion with the next process:

Without the scientific notation the answer for mercury is

Now we have to repeat the process for the other planets.
- Venus has a circumference of
then:

Without the scientific notation the answer for Venus is

- Earth has a circumference of
then:

Without the scientific notation the answer for Earth is

- Mars has a circumference of
then:

Without the scientific notation the answer for Mars is

- Jupiter has a circumference of
then:

Without the scientific notation the answer for Jupiter is

- Saturn has a circumference of
then:

Without the scientific notation the answer for Saturn is

- Uranus has a circumference of
then:

Without the scientific notation the answer for Uranus is

- Neptune has a circumference of
then:

Without the scientific notation the answer for Neptune is
