Respuesta :

bojanahrnjez

Answer:

100 centimeter = 1 meter

1000 meter is 1 kilometer.

so speed is 300000 kilometer/second.

Step-by-step explanation:

There are 3600 seconds in one hour, multiply with 3600=

1080 000 000 kilometer/hour.

williamwong66

Answer:

1.08^9km/hr

Step-by-step explanation:

3 x 10^10cm/ 1s

(3 x 10^10 ÷100÷1000)km / 1÷60÷60

=1.08^9km/hr