# The diameter of the Earth is 7928 miles. Using the conversation factor 1 mile=1.609 km, what is this in kilometers and in centimeters?

gsarora17 | (Level 2) Associate Educator

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The diameter of the Earth is stated in the question as 7928 miles. Inch , Foot , Yard and Mile are units for measuring length in the U.S. customary system.

The conversion factor for converting mile to kilometer , stated by you is 1.609.

So to convert mile into kilometer , it needs to be multiplied by the conversion factor.

1 mile = 1.609 km

Therefore 7928 miles = 7928*1.609 km

= 12756.152 km

Now we have to convert Kilometers into Centimeters.

We know that 1 km = 1000 meter

and 1 meter = 100 centimeter

Therefore , 1 km = 1000*100 centimeters

= 100000 centimeters

Now this is to be used as conversion factor for converting kilometers into centimeters.

Therefore , 12756.152 km = 12756.152*100000 centimeters

= 1275615200 centimeters

So, 7928 miles = 1275615200 centimeters

= `1.2756152*10^9 cm`