Earths diameter is about 13,000 Kilometers. If a globe has a diameter of 0.5 meter, write the globe's scale as a ratio. What distance on Earth would 1 centimeter on the globe represent?

Answer 1

26000km/m * 1000 m/km = 26,000,000 to 1

1 cm * 26,000,000 = 26*10^6 cm

26*10^6 cm * 10^-2 m/cm * 10^-3 km/m
= 260 km

Answer 2

can you explain that in 6th grade language please?

Answer 3

when doing unit conversions I multiply by quantities that are the same top and bottom but different units.
For example if I multiply a distance by 1000 m/km I do not change the distance, just the units from km to meters
The same in going from
cm to meters, * 1 meter/100 cm
and then meters to kilometers * 1 km/1000m

Answer 4

10^-2 = 1/10^2 = 1/100
10^-3 = 1/10^3 = 1/1000

10^6 = 1,000,000

Answer 5

i don't get it that didn't work 4 me

Answer 6

My son didnt understand