Question

the earth is - in reality - 12,740 kilometers wide, but you choose to build a model of the earth with a scalefactor of 100 km per inch. how large should your model earth be?

Answer 1

Using a scale factor of 100 kilometers per inch, a model Earth should be 127.4 inches in diameter, based on the actual Earth's diameter of about 12,740 kilometers.

Step-by-step explanation:

To determine the size of a model Earth using a scale factor of 100 kilometers per inch, we first need to find out how many inches the actual diameter of Earth would be reduced to using this scale factor.

The actual diameter of Earth is about 12,740 kilometers.

By dividing this number by the scale factor, we can find the size of the model.

12,740 kilometers ÷ 100 kilometers per inch = 127.4 inches

Therefore, the model Earth should be 127.4 inches in diameter.