Convert --→ 678,000 cm = ____ km.

Choose the best answer from the options below:
A 5.78 km
B 6.78 km
C 67.8 km
D 678 km

Please do not post any more questions until you've answered your previous questions.

To convert centimeters (cm) to kilometers (km), you need to know the conversion factor. There are 100,000 centimeters in 1 kilometer.

To find the answer, divide the given value in centimeters by the conversion factor:

678,000 cm / 100,000 = 6.78 km

Therefore, the correct answer is B. 6.78 km.