Question

The diameter of Earth is 12.7Mm. Express this diameter in centimeters. show answer choices A)1.27×108 cm B)1.27×107 cm C)1.27×109 cm D)1.27×105 cm (E) 1.27×106 cm

Answer 1

The diameter of Earth is 12.7Mm, which equals 1.27×109 cm when converted to centimeters. This corresponds to answer choice C).

Step-by-step explanation:

Converting the diameter of Earth from megameters (Mm) to centimeters involves multiplying by the number of meters in a megameter and then by the number of centimeters in a meter. There are 1,000,000 meters in a megameter and 100 centimeters in a meter. So, the conversion is as follows:

12.7Mm = 12.7 × 1,000,000m = 12,700,000m

Now convert meters to centimeters:

12,700,000m × 100cm/m = 1,270,000,000cm

Therefore, the diameter of Earth in centimeters is 1.27×109 cm, which corresponds to answer choice C).

Answer 2

The correct answer choice is A)
`1.27*10^8 cm`

To convert 12.7 Mm (megameters) to centimeters, you'll need to remember that 1 meter is equal to 100 centimeters.

So, 12.7 Mm can be converted to centimeters using the following steps:

1 Mm = 1,000,000 centimeters (since 'mega' denotes a million)

Therefore, 12.7 Mm = 12.7 × 1,000,000 centimeters = 12,700,000 centimeters